As you might've guessed, The Guide's Pack Accessories are designed to work with The Guide's Pack. Maybe you didn't order a Lead's Pocket when you ordered your Guide's Pack and want to do so now, or maybe you lost your Ice Axe Strap -- here's the place to order those (and more) accessories.
Left Side Pocket / Right Side Pocket:
Either of these side pockets can handle most one liter water bottles; a down vest and/or light rain shell will find a home there as well. A flap-covered #8 YKK zipper runs up the side and over top for access; all Side Pockets feature a zippered (#5 YKK coil) pocket hidden on the underside (the side that's against the surface of the main pack when the pocket is in situ), for quick and furtive access to keys/wallet/phone. Attaches to the Guide's Pack with four Annex Clips.
The Lead's Pocket is the same size as the Left and Right pockets, but it features extra, internal organization needed by the leader of any group: heavy webbing to clip multitools, flashlights, and knives; two zippered mesh pockets ideal for a space blanket or first aide supplies; three O-rings to tether car keys or pouches for even further organization; elastic loops for pens/pencils; and behind it all, a long, flat zipper pocket sized to accommodate a map or field guide. Unlike the Left and Right Side Pockets, the Lead's Pocket zips all the way around so you can open it like a clamshell, making it perhaps the ultimate "Admin Pocket".
Lash Straps (set of two): use one set of two Lash Straps on the top, left or right sides, or bottom to secure a small sleeping bag, sleeping pad or other similar item.
Ice Axe Strap: helps secure an ice axe to the front of The Guide's Pack.