Product Name Unit Price Qty Subtotal Remove

Your Current Subtotal

$ 0.00

Questions on Altair (Fall 2014)

No questions asked yet

Ask Your Own Question

Back to the product page

Therm-a-Rest - Altair (Fall 2014)

Quick Overview

Ultralight 4-season bag
Move your mouse over image or click to enlarge
Top Bottom Straps with Pad (pad not included)
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
Circumference at Chest Regular: 62 in / 158 cm
Long: 64 in / 163 cm
Circumference at Hips Regular: 58 in / 147 cm
Long: 60 in / 152 cm
Circumference 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

EN Comfort
Regular: -5 C / 24 F
Long: -5 C / 24 F

EN Limit
Regular: -11 C / 12 F
Long: -11 C / 12 F

EN Extreme
Regular: -31 C / -23 F
Long: -31 C / -23 F

Draft Tubes & Collar
Sculptured Hood
Trapezoidal Footbox
Sculptured Design
Stash Pocket
Efficient Comfort Shape
Accessory Loops near feet
Zone Insulation
Snag-Free Zipper
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.
Product Reviews
Product Reviews
Questions and Answers


Backcountry Gear gets it: camping and hiking gear should help get you out into nature while not weighing you down with what it takes to get there. Your outdoor adventure shouldn't be hindered by heavy kitchenware, overwrought backpacks, or complicated camping tents. Get equipped with the right gear, but not too much. It's about efficiency and versatility, minimum weight for maximum benefit. Backcountry Gear, where minimalism meets productivity.

Backcountry Gear knows lightweight backpacking is all about keeping things compact and sensible. Hiking gear should be sturdy, reliable, and lightweight. Camping tents should be constructed of lightweight, durable materials, and be easy to assemble. Kitchen kits should be featherlight and easy to clean. Trekking poles should keep you balanced. Accessories like medical kits should be comprehensive and intuitive. We understand, and we understand not every hiker is the same.

Our inventory has a backpack for every pursuit. We have ultralight daypacks, hydration packs, packs for kids, duffles, and child carriers. No one gets left out. We have dog packs, lumbar packs, dry bags, travel packs and luggage, courier bags, shoulder bags, and external frame backpacks. They’re all engineered by the best in their fields with features that make getting to what you need rapid and simple.

Backcountry Gear has reliable ultralight stoves and titanium cookware to make cooking a cinch and camping a treat. Canister stoves or liquid fuel stoves, we have one right for you. Boil water quickly with Jetboil's Sol and MSR's Reactor, or go ultralight with MSR's Micro Rocket and Primus' Express Stove. Keep weight down with ultralight titanium pots, pans, and utensils from Snow Peak and Evernew and keep going.


For multi-day hikes, Backcountry Gear has go-to water treatment options for every water source. Pump and be sure with MSR's Hyperflow Microfilter or Katadyn's Hiker Pro Microfilter. Or avoid chemicals and pumps altogether with gravity filtration systems from Platypus or UV sterilizers from Steripen.


Headquartered in Eugene, Oregon, Backcountry Gear has the best camping and hiking gear from the global industry leaders Osprey, Western Mountaineering, and Sierra Designs. We stock the best in sleeping bags, lightweight tents, and ultralight backpacks, too. When you plan for the outdoors, plan on, your first stop for outdoor adventure. Every step of the way.