Snowbird™ Air 300 Down Mummy Sleeping Bag 39.2°F/ 4°C - Blue / Medium

A closer look

Featuring an innovative scientific fill ratio and 650FP RDS down, Snowbird™ Air 300 Down Mummy Sleeping Bag 39.2°F/ 4°C delivers targeted, reliable warmth for your 3-season adventures. Key Features: Scientific Fill Ratio: Features 66.7% top and 33.3% bottom fill with a sealed neck baffle. This concentrates 650FP down exactly where heat is lost most, maximizing warmth without extra bulk. 3-Season Comfort: With a comfort rating of 4°C (39.2°F) and a limit of -1°C (30.2°F), the AIR 300 provides reliable thermal protection for spring and autumn adventures. Ultralight & Compact: Weighs only 640g /1.41 lb(Size L) and packs down to a tiny Φ16 × 32 cm (6.3 × 12.6 in), saving valuable space in your backpack for weight-conscious hikers. Professional Design: Built with a water-repellent 20D nylon shell, wind-blocking draft tube, and a 3D bottom to keep your feet warm while freeing up foot space. Premium Details: Equipped with a snag-free YKK two-way zipper, Duraflex cord lock for heat retention, and a snug 3D contoured cut filled with RDS certified responsible down.