Become a Member

Get access to more than 30 brands, premium video, exclusive content, events, mapping, and more.

Already have an account? Sign In

Become a Member

Get access to more than 30 brands, premium video, exclusive content, events, mapping, and more.

Already have an account? Sign In

Brands

Hydration Packs

The North Face Flight Training Pack 12

The best backpack for trail running of 2021

Lock Icon

Unlock this article and bundle up with Outside+.

Already have an Outside Account? Sign in

Outside+ Logo

40% Off Holiday Sale, Ends Nov. 28
$4.99 $2.99 / month*

Get the one subscription to fuel all your adventures.


  • Map your next adventure with our premium GPS apps: Gaia GPS Premium and Trailforks Pro.
  • Read unlimited digital content from 15+ brands, including Outside Magazine, Triathlete, Ski, Trail Runner, and VeloNews.
  • Watch 600+ hours of endurance challenges, cycling and skiing action, and travel documentaries.
  • Learn from the pros with expert-led online courses.
Join Outside+


*Outside memberships are billed annually. You may cancel your membership at anytime, but no refunds will be issued for payments already made. Upon cancellation, you will have access to your membership through the end of your paid year. More Details

Plenty of ventilation and a smart feature set make the Flight Training Pack our top pick for speed demons. Unlike many tight-fitting running vests that trap sweat, breathability excels here. Credit the space-age fabric: Designers wove a durable, tight-knit Cordura nylon ripstop around a polka-dot pattern made of special “dissolving yarn,” which disintegrates in a chemical wash. What’s left behind is a mesh that’s both more breathable than similar fabrics, and also more durable thanks to the ultratight weave. The fabric proved a godsend for one tester who spent 14 miles hopping deadfall during the dog days of summer in Colorado’s Gore Range, as he never had to stop to cool down. A large, cinch-top dorsal pocket fits a light puffy, shell, and first-aid kit, while a zippered cell phone sleeve and four other pouches on the shoulder harness keep small essentials close at hand. The Flight Training Pack also comes with two half-liter water bottles, each with a pull-cord affixed to the bottom. The cord threads through the bottom of the chest pockets, so we could retract the bottles back into their sleeves with a single pull.

unisex XS-XL

When you buy something using the retail links in our stories, we may earn a small commission. We do not accept money for editorial gear reviews. Read more about our policy.