The Addax 31 in Black X-Pac® The Addax 31 in Black X-Pac® with a Solaris 200 Halcyon interior The Addax 31 in Burnt Orange Ballistic The Addax 31 in Burnt Orange Ballistic with a Moab 200 Halcyon interior The Addax 31 in Constellation Ballistic The Addax 31 in Constellation Ballistic with a Island 200 Halcyon interior The Addax 31 in Coyote Ballistic The Addax 31 in Coyote Ballistic with a Mountain Grey 210 Cerylon interior The Addax 31 in Deep Blue Ballistic The Addax 31 in Deep Blue Ballistic with a Taiga 200 Halcyon interior The Addax 31 in Nebulous Grey Ballistic The Addax 31 in Nebulous Grey Ballistic with a Island 200 Halcyon interior The Addax 31 in Ursa Ballistic The Addax 31 in Ursa Ballistic with a Cobalt 210 Cerylon interior The Addax 31 in Wilderness Ballistic The Addax 31 in Wilderness Ballistic with a Taiga 200 Halcyon interior The Addax 31 in Aubergine Ballistic The Addax 31 in Aubergine Ballistic with a Northwest Sky 200 Halcyon interior The Addax 31 in Black Ballistic The Addax 31 in Black Ballistic with a Mountain Grey 210 Cerylon interior
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Addax 31

$295.00

A roll-top bag with room to spare!

31 Liters / 1890 cu. in.

Black X-Pac®/Solaris 200 Halcyon
Aubergine Ballistic/Northwest Sky 200 Halcyon
Black Ballistic/Mountain Grey 210 Cerylon
Burnt Orange Ballistic/Moab 200 Halcyon
Constellation Ballistic/Island 200 Halcyon
Coyote Ballistic/Mountain Grey 210 Cerylon
Deep Blue Ballistic/Taiga 200 Halcyon
Nebulous Grey Ballistic/Island 200 Halcyon
Ursa Ballistic/Cobalt 210 Cerylon
Wilderness Ballistic/Taiga 200 Halcyon
Looking for the Addax 26?

TLDR

The Addax 31 is a roll-top bag with room to spare! Two options for water-bottle carry, spacious device pockets, and a cavernous main compartment mean if you need to carry it, the Addax 31 can help you reach that mountaintop.

A few highlights of its features:

  • Carries a nominal capacity of 31 liters with 3 rolls and a maximum capacity of 48 liters when fully unrolled.
  • Tons of pockets and organization: 5 exterior pockets, 5 interior organizational pockets, and a total of 9 o-rings throughout
  • Plenty of quality-of-life features: luggage pass-through, substantial suspended laptop pocket with zippered quick-access, exterior water bottle pocket, integrated strap keepers
  • Fully lined so you can easily see the bottom 

If really big is too big and you want something with the same features but a little smaller, check out the Addax 26.

Full Description

The Addax 31 is more than just your classic roll-top pack. It has the thoughtful design that you'd expect from us, so let's dig in and get into the nitty-gritty!

Roll-Top

It's what makes the bag what it is. The roll-top is secured in place by two 1" side-release buckles, a male on one side and female on the other. The idea behind this is that you can either clip them to the clips above the shoulder straps or to each other if you want easier access but a less secure attachment versus a more secure attachment but more complex access (after all, who doesn't want secure attachment?)

At 3 rolls we've measured the bag out at 31 liters -- we call it the Addax 31 because this is going to be the way most folks carry the pack day-to-day. One roll to secure the load is measured at 41 liters; no rolls right up to the stitch we measured at 48 liters.

A person carrying the Addax

The Front

The front pockets are a generous size to help you keep the things you need access to quickly close-at-hand. The top has two equally-sized pockets to keep the smaller bits corralled and the bottom is a nice-sized open space perfect for your headphones.

Both have two o-rings in for your organizational needs.

Right at the bottom of the front is an attachment point perfect for things like a back light for safely riding at night (the roll-top is a style beloved by bicyclists in particular, after all!) A little cheeky swatch of color lines the back of the grab point, a secret splash of color for you.

The mesh pockets in the top front pocket of the Addax.

The Sides

On one side there is a gasp exterior water bottle pocket. We know that we've, to put it gently, steered-away from exterior water bottle pockets in the past but, well, folks keep asking for them! It's OK to stand on principle sometimes but easy access to water is something I think we can all agree with.

The other side is good-sized pocket for keeping items that are a bit larger or longer but still need to be handy.

The water bottle pocket of the Addax holding a water bottle.

The Bottom

The bottom of this pack is made with 1050d Black Ballistic to make sure the highest wear-point of the bag is well afforded against abrasion.

The Back

Poring over the back panel of the Addax reveals a luggage passthrough for those times when your ungulate must fly. Hidden in this pocket is a seat for the optional frame sheet, little sewn corners to hold it in place should you choose to use it. The back panel has closed-cell foam under spacer mesh to keep your back cool. The bottom has some black pack-cloth to add a little extra strength at a rub-point.

The shoulder straps are our wonderful 1/2" EVAZOTE® EV50 Edgeless shoulder straps, cushy as always, with built-in strap keepers to help keep the danglies at bay. Finally, a fully-removable sternum strap and gate-keeper waist strap appoint this pack in the usual TOM BIHN style.

The back of the Addax

Device Pockets

A rather large laptop pocket (16.5" x 10") made from our spacer mesh with an exterior zip as well as interior access, much like the one in our Synik 30 but a bit larger! Inside the main pocket, sewn to the laptop pocket, there is a tablet pocket that is almost as big (12" x 9.5") for even your bigger tablets.

A person removing a laptop from the laptop compartment.

The Inside

So now to the inside of the pack. It's cavernous. A quick-tip for packing in and packing out is to flip the roll top over at the bottom seam for easier access to the goods inside when doing your pack and unpack. Along with the tablet pocket mentioned in the Device Pockets section, there are two webbing pockets sized the same as the pockets you'll find in the top-front zip pocket, for the little items you want packed away a little tighter.

As with all our bags, we just threw o-rings at it and saw what stuck. 4 o-rings are positioned along the front-side of the main pocket to help you pull out what you want quickly without needing to dig through your bag in its entirety.

The interior pockets of the Addax filled.

What's Included

We include the following accessories to give you a good amount of options for your new bag right out of the gate.

One 8-inch Black Webbing Snaphook/Snaphook Key Strap

A Key Strap is a strip of webbing with plastic snaphooks on the end. The 8” Key Strap in Black that’s included in most of our larger bags is, for many, the gateway to a world of organization via Key Straps and Organizer Pouches. All the members of the Key Strap family are intended to make locating things in your bag easier and more instinctive. Pulling out a small item or pouch tethered to a strap is easier than rooting around aimlessly in the depths of your pack; you can also rest assured that anything hooked to a strap is much less likely to fall out or otherwise be left behind. You can find more Key Strap colors and varieties on the Key Strap page.

One Cord Zipper Pulls w/ Plastic Ends (8-Pack)

Some folks prefer metal zipper pulls. Others prefer cord pulls. So, what to do about that? We think the best solution (in most cases) is to offer metal pulls and include a starter pack of Cord Pulls with most bags. The most popular solution is to weave the Cord Pulls through the metal pulls, effectively silencing them without having to remove them. A video demonstrating various Cord Pull options and more colors/varieties of Cord Pulls can be found on the Cord Zipper Pulls page.


One Sternum Strap Assembly

An adjustable and removable sternum strap with leave-no-trace hardware: if you don't like or don't use your sternum strap, remove it and leave (almost) nothing behind.


One Gatekeeper Waist Strap

A simple webbing waist strap that can offer extra stability when running to catch a bus, plane, or train. It can also add a small measure of support for a heavy load (for a truly supportive hip belt experience, please see the optional 1.5" Padded Hip Belt.) Also features leave-no-trace hardware.

What's Optional

Addax Internal Frame

The Addax can hold a lot! Although the padded back panel provides a lot of built-in support and if you're schlepping around a laptop that's also going to be plenty rigid, if you want something to add some stiffness to the back panel or if you want to use the Padded Hip Belt to take some of the weight off your shoulders, the Internal Frame is a good idea.

1.5" Padded Hip Belt 

The 1.5" Padded Hip Belt allows you to carry some of the weight of a loaded pack on your hips rather than just your shoulders.

Roll-Top

It's what makes the bag what it is. The roll-top is secured in place by two 1" side-release buckles, a male on one side and female on the other. The idea behind this is that you can either clip them to the clips above the shoulder straps or to each other if you want easier access but a less secure attachment versus a more secure attachment but more complex access (after all, who doesn't want secure attachment?)

At 3 rolls we've measured the bag out at 31 liters -- we call it the Addax 31 because this is going to be the way most folks carry the pack day-to-day. One roll to secure the load is measured at 41 liters; no rolls right up to the stitch we measured at 48 liters.

A person carrying the Addax

The Front

The front pockets are a generous size to help you keep the things you need access to quickly close-at-hand. The top has two equally-sized pockets to keep the smaller bits corralled and the bottom is a nice-sized open space perfect for your headphones.

Both have two o-rings in for your organizational needs.

Right at the bottom of the front is an attachment point perfect for things like a back light for safely riding at night (the roll-top is a style beloved by bicyclists in particular, after all!) A little cheeky swatch of color lines the back of the grab point, a secret splash of color for you.

The mesh pockets in the top front pocket of the Addax.

The Sides

On one side there is a gasp exterior water bottle pocket. We know that we've, to put it gently, steered-away from exterior water bottle pockets in the past but, well, folks keep asking for them! It's OK to stand on principle sometimes but easy access to water is something I think we can all agree with.

The other side is good-sized pocket for keeping items that are a bit larger or longer but still need to be handy.

The water bottle pocket of the Addax holding a water bottle.

The Bottom

The bottom of this pack is made with 1050d Black Ballistic to make sure the highest wear-point of the bag is well afforded against abrasion.

The Back

Poring over the back panel of the Addax reveals a luggage passthrough for those times when your ungulate must fly. Hidden in this pocket is a seat for the optional frame sheet, little sewn corners to hold it in place should you choose to use it. The back panel has closed-cell foam under spacer mesh to keep your back cool. The bottom has some black pack-cloth to add a little extra strength at a rub-point.

The shoulder straps are our wonderful 1/2" EVAZOTE® EV50 Edgeless shoulder straps, cushy as always, with built-in strap keepers to help keep the danglies at bay. Finally, a fully-removable sternum strap and gate-keeper waist strap appoint this pack in the usual TOM BIHN style.

The back of the Addax

Device Pockets

A rather large laptop pocket (16.5" x 10") made from our spacer mesh with an exterior zip as well as interior access, much like the one in our Synik 30 but a bit larger! Inside the main pocket, sewn to the laptop pocket, there is a tablet pocket that is almost as big (12" x 9.5") for even your bigger tablets.

A person removing a laptop from the laptop compartment.

The Inside

So now to the inside of the pack. It's cavernous. A quick-tip for packing in and packing out is to flip the roll top over at the bottom seam for easier access to the goods inside when doing your pack and unpack. Along with the tablet pocket mentioned in the Device Pockets section, there are two webbing pockets sized the same as the pockets you'll find in the top-front zip pocket, for the little items you want packed away a little tighter.

As with all our bags, we just threw o-rings at it and saw what stuck. 4 o-rings are positioned along the front-side of the main pocket to help you pull out what you want quickly without needing to dig through your bag in its entirety.

The interior pockets of the Addax filled.

What's Included

We include the following accessories to give you a good amount of options for your new bag right out of the gate.

One 8-inch Black Webbing Snaphook/Snaphook Key Strap

A Key Strap is a strip of webbing with plastic snaphooks on the end. The 8” Key Strap in Black that’s included in most of our larger bags is, for many, the gateway to a world of organization via Key Straps and Organizer Pouches. All the members of the Key Strap family are intended to make locating things in your bag easier and more instinctive. Pulling out a small item or pouch tethered to a strap is easier than rooting around aimlessly in the depths of your pack; you can also rest assured that anything hooked to a strap is much less likely to fall out or otherwise be left behind. You can find more Key Strap colors and varieties on the Key Strap page.

One Cord Zipper Pulls w/ Plastic Ends (8-Pack)

Some folks prefer metal zipper pulls. Others prefer cord pulls. So, what to do about that? We think the best solution (in most cases) is to offer metal pulls and include a starter pack of Cord Pulls with most bags. The most popular solution is to weave the Cord Pulls through the metal pulls, effectively silencing them without having to remove them. A video demonstrating various Cord Pull options and more colors/varieties of Cord Pulls can be found on the Cord Zipper Pulls page.


One Sternum Strap Assembly

An adjustable and removable sternum strap with leave-no-trace hardware: if you don't like or don't use your sternum strap, remove it and leave (almost) nothing behind.


One Gatekeeper Waist Strap

A simple webbing waist strap that can offer extra stability when running to catch a bus, plane, or train. It can also add a small measure of support for a heavy load (for a truly supportive hip belt experience, please see the optional 1.5" Padded Hip Belt.) Also features leave-no-trace hardware.

What's Optional

Addax Internal Frame

The Addax can hold a lot! Although the padded back panel provides a lot of built-in support and if you're schlepping around a laptop that's also going to be plenty rigid, if you want something to add some stiffness to the back panel or if you want to use the Padded Hip Belt to take some of the weight off your shoulders, the Internal Frame is a good idea.

1.5" Padded Hip Belt 

The 1.5" Padded Hip Belt allows you to carry some of the weight of a loaded pack on your hips rather than just your shoulders.

Materials

Exterior

PFC Free, 100% Recycled RX30 X-Pac®
— or —
bluesign® certified High-Tenacity 2x2 Ballistic nylon

Upper Back

Spacer Mesh

Lower Back

Black Pack Cloth

Back Pad

Closed-cell foam

Shoulder Straps

Edgeless EV50 1/2” / 12mm shoulder straps (EVAZOTE® OEKO-TEX® foam)

Other Components

Duraflex®, Nexus, and Woojin buckles and related components

Specs

Dimensions

Exterior: 12.8" (w) x 20.1" (h) x 11.8" (d) / 325 (w) x 510 (h) x 300 (d) mm
Front Top Pocket: 8.5" x 6" / 215mm x 152mm
Front Bottom Pocket: 10" x 8" / 254mm x 203mm
Side Pocket: 12" x 3.5" / 304mm x 89mm
Luggage Passthru: 11" / 279mm wide

Weight

X-Pac®: 1235g / 2lb 12oz
Ballistic: 1360g / 3lb

Volume

3 Rolls: 31 Liters / 1890 cu. in.
1 Roll: 41 Liters / 2500 cu. in.
No Roll: 48 Liters / 2930 cu. in.

Device Pockets

Laptop: 16.5" x 10" / 420 x 255mm
Tablet: 12" x 9.5" / 304mm x 241mm

Total O-Rings

9

(4 in the main compartment,
2 in the top front pocket,
2 in the bottom front pocket,
1 in the side pocket)

Lifetime guarantee image

Sewn in Seattle

Our bags are designed and sewn right here in Seattle, Washington, U.S.A.

That allows us to be control freaks in the best way possible; we have direct control and oversight of the quality of our materials, our products, and the jobs and working environment that we help create. It also offers us a unique spontaneity: when we have an idea for a new product or accessory, we can design it, figure out how to build it, add it to our website and be ready to ship it out our front door all within just a few weeks. How cool is that?

Intrigued? You can find out more about the unusual way we do business on our Company Philosophy page.

THE BIHN Guarantee

Everything you buy from us here at TOM BIHN is satisfaction guaranteed. We’ve been in business since 1972 and we stand behind what we make.

If something goes wrong and it's our fault, we'll fix it for free. Repairs due to normal wear and tear or due to other things that are not our fault will be performed, when possible, at a reasonable charge right here in our Seattle factory where your bag was made. Defects in materials or workmanship are uncommon and almost always evident while the product is still new. Keep in mind that bags and packs are often subject to extreme wear in everyday use: do not expect them to last forever. Only true love lasts forever! You can expect a TOM BIHN product to give years and years of hard service.

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