Marathon Messenger Guides Pack plus an O-ring to which

plus an O-ring to which the included 8" Key Strap is attached

This allows you to zip the pouch open / access contents on just the narrowest side or zip it fully open

which allows you to attach it to any of the O-rings inside our travel bags

Main compartment opens with #8 YKK Racquet-Coil zippers with DWR coating

If variety is the spice of life

Marathon Messenger Guides Pack plus an O-ring to whichThe Marathon Messenger balances form and function for wherever your day takes you. Smart design, durable build, easy carry everything you need for a quick sprint or an even paced march. Flap closure with dual buckles keeps your gear in place and within arms reach. Capacious main compartment with a padded bottom and three banded open top pockets for journals, packing cubes, or small accessories, and two elasticized pockets on either side for a water