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Sidewinder 20 + Big Agnes

Down sleeping bag - Sidewinder 20 - Big Agnes - 2026

332,90 €
-10%
369,90 €
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Sidewinder 20
332,90 €
-10%
369,90 €
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Description

The Sidewinder 20 from Big Agnes is a spacious and lightweight sleeping bag, ideal for hiking or camping, and specially designed with side-sleepers in mind.

Made from a bluesign®-certified, water repellant, hybrid 650 DownTek™ down insulation, combined with recycled synthetic FireLine™ ECO, this bag's construction is especially suited to side sleepers, to optimize comfort and warmth from head to toe. Its compressible insulation makes it easy to carry with you wherever you go. In addition, the outer fabric is tear-resistant and water-repellent for added durability. Featuring a fitted hood for good head insulation, this bag has a pillow pocket to keep your pillow in place all night, as well as a zipper with a flap for extra draught-protection, and inner and outer loops for hanging the bag to dry.

Compressible, lightweight and warm with a comfortable temperature rating of -7ºC, the Sidewinder SL 20 is the ideal sleeping bag for anyone who sleeps on their side and wants to optimize weight and space in their hiking bag.

Sidewinder 20
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Technical details
Comfort temperature
-1
Sleeping bag shape
Mummy
Insulation type
Unisex
Use - sleeping bag
Trekking
Waterproof
Déperlant
Overview
Brand
Big AgnesBig Agnes-logo
Warranty
2
Year
2026
Season
Spring
Gender
Unisex
Product details
Weight (g)
1230
Length (cm)
213
Compressed volume
26
Technical details
Zip side
Gauche
Seasons
3
Combinable
No
Performance
Extreme temperature
-25
Comfort temperature limit
-7
Use type
14605
Filling
Hybrid
Other features

- Specially designed for people who sleep on their side
- Fitted adjustable hood
- Pillow Barn which keeps the pillow in place
- Construction that limits pressure points
- Anti-snag YKK® zipper
- Interior fabric loops for sleeping bag liners
- Exterior loops for hang drying or storage
- Storage bag included
- Certified materials Bluesign®
- PFC-free DWR water-repellent treatment
- RDS-certified down

Materials:
- Exterior: Ripstop nylon, with PFC-free waterproof coating
- Lining: PFC-free water-repellent taffeta
- Main insulation: water-repellent, DownTek™ PFC-free down, bluesign® certified
- Secondary insulation: FireLine™ ECO 100% Recycled polyester



Size Regular Long
Weight (g) 1,020 1,140
Fill Weight (g) 538 604
Shoulders (cm) 155 165
Hips (cm) 140 150
Feet (cm) 91 102
Folded dimensions (cm) 20 x 45 20 x 45
Dimensions when compressed (cm) 18 x 19 19 x 20




bluesign® The bluesign® system is the solution for an environmentally-friendly textiles industry. It regulates the use of harmful substances from the outset of the manufacture process and establishes and monitors standards for safe and environmentally friendly production.
DownTek™ This water-repellent down duvet has been treated with a water-repellent nano-treatment. When ordinary down is exposed to moisture, droplets of moisture cling to the filaments of the down cluster, forcing the down to collapse on itself. Once wet, ordinary down loses its ability to insulate because the air pockets that provide insulation collapse. Conversely, it DownTek™ stays dry 27 times longer than ordinary down when exposed to water!
Responsible Down Standard - RDS RDS standard guarantees down and feathers from well-treated ducks and geese, which are healthy and express their innate behaviour, without experiencing pain, fear or distress. This standard covers the entire supply chain, from breeding to the finished product.
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