Sleeping bag Big Agnes Sidewiner 20

Second generation side sleeper technology: 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

Optimized profile and thermally efficient footbox is patterned to mimic body position while lying on your side

Down fill with a water-repellent finish throughout the bag provides lofty warmth

Strategically placed synthetic insulation to provide padding and pressure relief at the knees, hips, and shoulders

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

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

Storage sack & stuff sack included

• Shell: Recycled polyester ripstop featuring a water-repellent finish without intentionally added PFAS chemicals
• Lining: Recycled polyester taffeta featuring a water-repellent finish without intentionally added PFAS
• Primary Fill: 650 fill Downtek™ PFC-Free repels water while maintaining insulating value, with bluesign® Certified water-repellent chemistry
• Body Mapped Fill: FireLine™ ECO Synthetic Insulation, 100% post-consumer recycled polyester, featuring low-denier fibers that are tightly woven and provide high loft, compressibility, high weight-to-warmth ratio, and durability