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This product is no longer available, but don't go just yet.


  • Half Mass is built for bike commuters and sized for a day's worth of gear; padding on the backside and along the contoured base protects the contents and provides structure
  • Inside, a padded computer sleeve cradles a 17 in. or smaller laptop safely off the bottom; sleeve secures with a buckle and strap
  • Main compartment features a drop pocket that secures with a hook-and-loop tab, a mesh pocket, a padded electronics pocket, pen sleeves and a secure zippered pocket
  • Cover flap overlaps the sides of the bag to block rain; zippered pocket on flap has moisture-shedding reverse coil zipper
  • External side pocket stows a cell phone, power cords or water bottle
  • No-slip shoulder strap with floating pad is fully adjustable; stowaway waist strap holds pack secure for riding
  • Patagonia Half Mass features a topside carrying handle, reflective panels for visibility at night and a bike-light mount
  • Made of 600-denier 100% recycled polyester with a polyurethane coating and a Durable Water Repellent finish


View all Patagonia Cycling Messenger Bags

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Best Use Casual, Cycling
Bag Style Messenger Bag
Gear Capacity (L) 22 liter
Gear Capacity (cu. in.) 1,343 cubic inches
Number of Exterior Pockets 2 + main compartment
Laptop Compartment Yes
Fits Laptop Size (in.) 17 inches
Carry-On Size Yes
Material(s) Recycled polyester
Dimensions 17.5 x 14 x 6.5 inches
Weight 1 lbs. 13 oz.
Gender Unisex