In another thread, people mentioned a vintage drawstring bag design named the Ruck Sack.
I wanted to find out how big the Guide's Pack (another drawstring bag) really is. I decided to compare it to the Synapse 25 because both are made of Parapack.
Dimensions: 21.5" x 12.5" x 9.5" / 550 x 320 x 240 mm
Volume: 1900 cubic in / 31 liters
Weight: 2 lb 8 oz / 1130 grams
Dimensions: 20" x 13.4" x 9" / 508 x 340 x 230 mm
400d DyneemaŽ/420d nylon ripstop: 1 lb 11 oz / 770 grams
420d HT nylon Classic Parapack: 1 lb 12 oz / 780 grams
Volume: 1526 cubic inches / 25 liters (ASTM Standard Measure)
I do not have either bags, but I have many Large Pouches (fits U.S. or A4 letter papers or file folders): 14.5" x 11.2" (370 x 285 mm) to help me visualize dimensions.
So the Guide's Pack is only 42 mm (4.2 cm) taller, but it is 20 mm (2 cm) less wide and 10 mm (1 cm) thinner than the Synapse 25.
Since I am a visual person and a picture is worth a thousands words (or numbers), I thought of posting a blog pictures of Tom wearing both bags. There is a picture of Tom wearing a Synapse under the About Us title on the blog.
Introducing The Guide's Pack and Founder's Briefcase - TOM BIHN Blog: We make travel bags in Seattle, Washington
I couldn't find a close up picture of Tom wearing the Synapse 25 which I find puzzling because Tom is usually the first person to model every bag.