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Big Agnes W's Sidewinder SL 20F/-6C

Big Agnes W's Sidewinder SL 20F/-6C
This item is currently not available.


Winner of Outside Magazine's 2021 Gear of the Year Award!

Are you a side sleeper?
The Sidewinder SL and Camp sleeping bags are engineered to be more comfortable for side sleepers with a long, ambidextrous zipper that stays out of the way when sleeping on your side and when rolling side to side. Packed with the technical features of a traditional mummy bag, with wiggle room where you need it and extra insulation placed at pressure points, reducing "side-effects" for great nights in the backcountry. But really, with lofty fills and soft materials, these bags provide optimized warmth and comfort in any position you settle into.

Our Women's bags are designed to contour to your figure for the most thermally efficient and comfortable night's sleep

Specifically designed for women 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 PFC-free water repellent finish

Down fill with a PFC-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 + Sizing

Bag Weight Petite: 2lb 7oz / 1.11g / Regular: 2lb 10oz / 1.19g
Fill Weight Petite: 22oz / 634g / Regular: 24.5oz / 700g
Compressed Bag Size Petite: 7" x 8" / 18 x 20cm / Regular: 6" x 7.5" / 19 x 20cm
Stuff Sack Size Petite: 8" x 17.5" / 20 x 45cm / Regular: 8" x 17.5" / 20 x 45cm


Sidewinder SL Sleeping Bag

Part Numbers

Option UPC Store SKU
Petite 841487134372 210000073147
Regular 841487134389 210000073148