Sidewinder 20 2026

Specifically designed for the over 60% of people who sleep on their sides, the second generation of our patented Sidewinder side sleeper technology ensures warmth, comfort, and ease of use in any position you settle into. Constructed for comfort, with additional body mapped insulation to optimize warmth where you need it and provide cushioning and support at the hips and shoulders, easing pressure points and other ‘side effects’. The Sidewinder is a side sleeper’s dream bag with technical features that roll seamlessly from one adventure to the next, and from one side to the other at night. U.S. Patent 11957260 B2

Features:

• Specifically designed for people who sleep on their sides with a technical fit, patterned to move with you as you roll from one side to the other

• Close fitting, jacket-style hood keeps insulation close to the body without sacrificing mobility

• Keep pillow in place with unique Pillow Barn made of stretch mesh material with interior access from either side for easy adjustment

• Optimized warmth and minimized pressure points with body mapped insulation

• Improved shell fabric and lining with PFAS-free water repellent finish

• Down fill with a PFAS-free water repellent finish throughout the bag provides lofty warmth while synthetic insulation helps alleviate common pressure points in the hips and feet

• Optimized fit and thermally efficient footbox is patterned to mimic the shape of your foot position while lying on your side

• Smooth, quick zip with anti-snag locking zipper with no-draft zipper garage, and long, ambidextrous zipper

• Easily adjust hood without unzipping using low-profile internal cordlock access

• Seal out drafts by cinching insulated tube along upper hood opening

• Hang dry or store bags with exterior loops

• Storage sack & stuff sack included

Specs:

Regular: Total Weight:2lb 4ozFill Type:650 DownTek™ + FireLine™ EcoTotal Fill Weight:19ozCompressed Bag Size:6.5" x 8"Stuff Sack Size:14L 8" x 17.5"Max User Height:6'Shoulder Girth:61"Hip Girth:55"Foot Girth:36"

Long: Total Weight:2lb 8ozFill Type:650 DownTek™ + FireLine™ EcoTotal Fill Weight:21ozCompressed Bag Size:7.5" x 8"Stuff Sack Size:14L 8" x 17.5"Max User Height:6' 6"Shoulder Girth:65"Hip Girth:59"Foot Girth:40"