Thule Upslope 20L Backpack vs Thule Stir Alpine 40L Backpack

The main difference between the Thule Upslope 20L Backpack and the Thule Stir Alpine 40L Backpack is that the Upslope 20L Backpack has Side Pockets (Side pocket can fit goggles, sunglasses or gloves) while the Stir Alpine 40L Backpack does not.

Thule Upslope 20L Backpack
Thule Stir Alpine 40L Backpack Front View
Specs Brand Thule Thule
Name Upslope 20L Backpack Stir Alpine 40L Backpack
Category Sports Sports
Sub Category Ski Ski
Capacity (L) 20L 40L
Dimensions (in) 13 x 11 x 21.3 11.42 x 10.24 x 22.83
Weight (lb) 1.7 2.9
Fabric 420D Nylon Coated 210D Robic, 70D Nylon
Color 2 colors and patterns Obsidian
Warranty Thule Guarantee Thule Guarantee
Release Date November 27, 2020 January 6, 2021
Rating 4.4 4.8
Price Under $150 Under $200
General Features Shoulder Straps Adjustable shoulder straps with insulated hydration hose sleeve Padded shoulder straps with stretch pocket for snack
Sternum / Chest Straps Adjustable chest strap Sternum strap with whistle buckle
Hip Belt / Waist Strap Adjustable waist strap Hip belt with gear loops
Water Proof / Water Resistant Ultra durable material withstands weather and abrasion
Main Compartment Access Top and side zipped access Top loading and side zipped access
External Pockets Zipped side pocket Top floating pocket
Internal Compartments Internal hydration sleeve Internal zippered mesh pockets
Side Pockets Side pocket can fit goggles, sunglasses or gloves
Handles Top grab handle Top grab handle
Loops and Attachments Lash points for helmet, ski and board carry system, ice axe loop External gear attachment system for skis, helmet, ice axe and more
Travel Features Compression Straps Internal and external compression straps External compression straps
Stowable Straps Removable lid, frame sheet, hip belt padding and sternum strap
Hiking / Backpacking Features Back Panel Padded back panel Breathable back panel
Load Lifters Yes
Top / Floating Lid Yes
Hydration Features Hydration Compatible Yes Yes

You're currently comparing the Upslope 20L Backpack by Thule against the Stir Alpine 40L Backpack by Thule .


Thule 's Upslope 20L Backpack is a Sports backpack with Ski features while Thule 's Stir Alpine 40L Backpack is a Sports backpack with Ski features.

The Thule Upslope 20L Backpack has a capacity of 20L (liters), weighs 1.7 pounds and it's dimensions in inches are 13 x 11 x 21.3. It's made of 420D Nylon and is available in 2 colors and patterns in comparison the Thule Stir Alpine 40L Backpack's capacity is 40L with a size of 11.42 x 10.24 x 22.83 inches. Constructed from Coated 210D Robic, 70D Nylon it weighs 2.9 pounds and is available in Obsidian.