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Quick OverviewUltralight 4-season bag
Ski touring and mountaineering demand a down sleeping bag that is comfortable in the coldest months of the year. The Altair sleeping bag is designed to provide efficient warmth down to 0F (-18C), while offering light, packable performance that makes each day in the mountains more enjoyable. Like all Therm-a-Rest sleeping bags, it integrates with your mattress to eliminate the sliding, twisting and cold spots that can interrupt sleep.
The Altair sleeping bag is extremely lightweight, highly compressible and warm enough to perform in the mountains all year long.
Therm-a-Rest is confident that when you sleep in one of their bags, you’ll wake up feeling better than ever. If you are not completely satisfied with your Therm-a-Rest sleeping bag, we will give you your money back—no questions asked. Return your clean, undamaged bag or blanket within 90 days and receive a full refund.
International Restrictions Apply
Manufacturer Therm-a-Rest Weight Reg: 2 lbs. 7 oz. (1120 g)
Long: 2 lbs. 10 oz. (1200 g)
Gender Men's & Unisex Made in China Temp Rating º F 0 F Temp Rating º C -8 C EN Lower Limit (Men's Rating) 14F EN Comfort (Women's Rating) 26F Bag Style Mummy Seasonal Usage Four Season Insulation 750+ Goose Down Fill Weight Regular: 1 lb 4 oz / 580 g
Long: 1 lb 7 oz / 640 g
Bag Shell Material 30D Nylon Ripstop with DWR Bag Lining Material 30D Nylon Bag Length Regular: Fits up to 6 ft.
Long: Fits up to 6 ft. 6 in.
Bag Stuff Size Regular: 8 x 18 in / 15 Liters
Long: 8 x 18 in / 15 Liters
Diameter at Chest Regular: 62 in / 158 cm
Long: 64 in / 163 cm
Diameter at Hips Regular: 58 in / 147 cm
Long: 60 in / 152 cm
Diameter at Foot Regular: 40 in / 102 cm
Long: 40 in / 102 cm
Waterproof No Other Features Fits
Reglar: 6 ft / 183 cm
Long: 6 ft 6 in / 198 cm
Regular: 30 in / 76 cm
Long: 30 in / 76 cm
Regular: 75 in / 190 cm
Long: 84 in / 213 cm
Regular: -5 C / 24 F
Long: -5 C / 24 F
Regular: -11 C / 12 F
Long: -11 C / 12 F
Regular: -31 C / -23 F
Long: -31 C / -23 F
Draft Tubes & Collar
Efficient Comfort Shape
Accessory Loops near feet
Light, Compressible Fabrics
Patent Pending Synergy Link Mattress Connectors
Premium Down Insulation
Stuff and Compartmental Storage Sack Included
-- Sleep Securely: SynergyLink Connectors bring your sleeping bag and mattress together for uninterrupted sleep.
-- Sleep Warmer: Zoned Insulation puts fill where you need it most, for efficient warmth.
-- Move Freely: Our Efficient Comfort design gives you room to move where you need it, without creating too much space to heat efficiently.
-- Carry Less: Lightweight, 750+ fill goose down offers compressible warmth.
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