Find Your Store
Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards

Outdoor Research
Adrenaline 20L Day Pack

4.5 out of 5 stars
2 Reviews
Current price: $53.53 Original price: $118.95
55% off



Outdoor Research Adrenaline 20L Day Pack

The Adrenaline Day Pack 20L features a streamlined design, waterproof materials, and thoughtfully positioned seams to deliver a versatile, lightweight day-tripper for fast and light mountain adventures.

[face fabric] Mini Diamond Ripstop (210D nylon, PU coating), [lining] 55% oxford polyester, 45% recycled polyester
20L (1220cu in)
Shoulder Straps
padded, adjustable
Waist Belt
2 side water bottle, 1 zippered top, 1 internal hydration sleeve
Claimed Weight
1lb 6.2oz
casual, hike & camp
Manufacturer Warranty
limited lifetime

Overall Rating

4.5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 1 reviews

What do you think about this product?


Selecting an option will reload the available reviews on the page
4 out of 5 stars

April 11, 2024

Really really solid but why no passage for a bladder hose?

This is a very solid backpack but a little disappointed it doesn't have a passage for the bladder hose to extend out of the pack. I'll accept it's my fault for not making sure it did before ordering but honestly didn't consider the pack would have a bladder hook/sleeve but no passage way for the hose.


Originally reviewed on

5 out of 5 stars

May 24, 2023

Solid pack! Great in rain!

[This review was collected as part of a promotion.] This thing is awesome! Super simple and light weight. Pretty water resistant as well. I use it as my go to and have been caught in some pretty good rain storms and it kept everything dry. The back pad doesn't hold too much heat and the taller more narrow shape of the pack doesn't feel like you have a bunch of stuff. I've used it for hikes, weekend trips and as day to day bag. 10/10 would recommend.


Originally reviewed on