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Patagonia Half Mass Courier Bag

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The Patagonia Half Mass is a fully featured courier bag sized to hold enough gear (and a laptop) to keep you going all day. The Half Mass holds your busy life together.

  • 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


Item 818298


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Patagonia Half Mass Courier Bag Specs
Best use
Messenger bag
22 liter
1,343 cubic inches
2 + main compartment
17 inches
Recycled polyester
17.5 x 14 x 6.5 inches
1 lbs. 13 oz.
Bag style
Gear capacity (L)
Gear capacity (cu. in.)
Number of exterior pockets
Laptop compartment
Fits laptop size (in.)
Carry-on size

Patagonia Half Mass Courier Bag

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Patagonia Half Mass Courier Bagis rated4.875out of5by8.
Rated5out of5byfromHas the 3 essential featureThis bag has the 3 most important features to me; an outside pocket to hold a water bottle or an umbrella or a sunglass case, a grab handle and an outside zippered pocket. It holds an iPad in a sleeve, chargers cables etc and everything I need for a day at work. The rear slot is useful for a newspaper, magazine or plane tickets, etc Not too big, but still can hold the essentials.
Date published: 2013-07-20
Rated4out of5byfromComfortably, durable messenger bagThe only reason this bag doesn't get 5 stars is because the buckle on the strap (which is not covered by the padding) hits my collarbone at the length I like to use the strap. The paddiing won't slip over the buckle to cushion. It's not painful, just less comfortable than 5 stars. Otherwise, great, durable bag. I fill it with a lot of books + computer and it holds everything well.
Date published: 2013-07-17
Rated5out of5byfromIt's not THAT big....This bag gets 5 stars b/c it is awesome. But the reviews lead you to believe it is way bigger than it is. I got mine and tried putting a laptop, running shoes, shorts, and a t-shirt in it. Those fit, but nothing more. I can't get my lunch or anything else in. Forget about picking something up at the store. Or carrying a jacket. I am returning and getting the Critical Mass.
Date published: 2013-04-10
Rated5out of5byfromvery good bagI've been commuting on a bike with this bag for a couple weeks and it's been great. It's seems to be solidly built despite being light. I bought it for the stabilizer strap which has worked well for keeping the bag from sliding to my side. Also, they did away with the velcro that a lot of bags have under the flap which I always found to be loud and cumbersome.
Date published: 2013-04-08
Rated5out of5byfromAwesome!I got this bag for my boyfriend who cycles frequently to school. I was worried that it might be too small when I ordered it, but it is a perfect size! He loves the look, color, style, and space that comes with this. The shoulder strap is adjustable, and fits him well. He can easily fit his notebooks, laptop,a few clothes and most importantly his water bottle. Patagonia continues to be one of our favorite brands!
Date published: 2013-01-31
Rated5out of5byfromGreat REAL messenger bag!The absolute most important feature of this bag is the secondary strap that keep the bag on your back.... where it belongs. Other bags ( some north face options) I have tried do not have this strap and nothing is more irritating or unsafe about having your pack slide around to your front side while riding. I bike to and from work and school 5-7 days a week and carry a lot of stuff back and forth.Has plenty of room for a notebook, a textbook or two, extra clothes, bike lock, and food & drink. Overall the format and layout of pockets is fantastic, and if you have daily bike commute I can't recommend this enough. This pack is purpose built for bike riding/ commuting.
Date published: 2012-09-23
Rated5out of5byfromThe HM is great, lots of room!I use this for nursing school, a couple of our required reading books can weigh 22lbs./book plus a labtop and binders. This bag is incredibly comfortable and the strap was a big seller.
Date published: 2012-09-19
Rated5out of5byfromGreat BagMy wife uses this every day in her role as a special ed teacher and has been delighted with it so far. She stuffs it full every morning and brings home even more at night. A very nice bag that is roomy and comfortable to sling over her shoulder and go.
Date published: 2012-09-12

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