Top Endurance and Outdoor Sports brands at up to 70% off retail

Presented by LeftLane Sports
Become a Member
How It Works:
Things Go Fast!

Products are available for a limited time and sell out quickly. Grab before its gone!
Sales start at 7am PST / 10am EST.

New Sales Daily

We team up with the world's top brands to launch exclusive sales daily. There's always something new to see!

Check Your Inbox

We keep you in the loop!
You'll be notified at the start of a new sale so you never miss out!

Learn More:

ACTIVE GearUp, presented by LeftLane Sports is a members-only shopping community for Endurance and Outdoor enthusiasts offering discounts up to 70% off retail on the world’s top brands and products. We launch new sales daily, and membership is FREE.

Gear You Need

Our team of industry experts hand-select products from the world's top Endurance and Outdoor brands.

Prices You Want

As a member, you have exclusive access to these brands at incredible discounts up to 70% off retail.

Service You Deserve

Most orders ship within
one business day,
and we are always here to help!

Product Image
Scroll Over Image To Zoom
Scroll over large image to zoom

Therm-a-Rest Altair 0 Down Bag - Reg.

Style #:  THR01269

Your Price

Suggested Retail

Anticipated Ship Date

January 22 - 23

From an overnight snowshoe to a multi-day ski tour, the Altair winter sleeping bag features zonal 750 fill goose down insulation to reliably keep you warm in the coldest months of the year. And when the temps are this low, you’ll really appreciate how the SynergyLink™ System keeps you and your mattress under the warmth of the bag to maintain the precious warmth you need to sleep well. It also provides you the freedom to move however you like throughout the night, allowing you to wake fresh for the day ahead.

- Zoned Insulation (Box-baffled 750+ fill goose down w/ sewn-through insulated bottom)
- SynergyLink Connectors integrate your mattress for optimal comfort and efficiency
- Accomodates mattresses up to 25in wide
- Heat trapping draft collar and full-length zipper draft tube
- Differential cut maximizes loft
- Snag-free zipper
- Cinchable hood
- External zip pocket
- Stuffsack and storage sack included
- Length: 72in / 183cm
- Weight: 2lbs 10oz
- Packed dimensions: 8 x 18in / 20 X 46cm
- Comfort range: 24° F / -4° C
- Transition Limit: 12° F / -11° C
- Discontinued model

ACTIVE GearUp wants you to be satisfied with every purchase.

90 Day Returns
  • This item is eligible to be returned for store credit within 90 days of order delivery date.

If you would like more information, click here for our complete Return Policy.

14-Day Price Drop Guarantee

14-Day Price Drop Guarantee - If the price on ACTIVE GearUp drops within 14 days of your purchase, we'll credit you the difference in the form of a store credit. Please note: special site-wide discounts and promotional codes do not apply.

Lowest Price Guarantee

Lowest Price Guarantee - ACTIVE GearUp offers unbeatable prices on the brands and products you love. If you find a lower price elsewhere, send us an email with a link to the product and we'll match the price for you. Please note: the item must be the same brand, style, size, color, and year for a price match to qualify.

Lost Package Protection Guarantee

Lost Package Protection - If your package does not arrive, we'll open an investigation with the carrier on your behalf and replace it at no cost to you or refund you for your original purchase price.

Product Integrity Guarantee

Product Integrity Guarantee - ACTIVE GearUp is an authorized dealer for every brand we sell. We guarantee that we have the highest quality footwear, apparel, and gear in the industry. If an item you receive is wrong, damaged, or defective we'll replace it at no cost to you or refund you for your original purchase price.

e-Gift Card Notice
You have an e-Gift Card in your shopping cart.
Your e-Gift Card purchase must be completed prior to adding any merchandise items to your shopping cart.
Please complete your current e-Gift Card purchase; then reselect your merchandise items.
Thank you.
Checkout Now »
Your items are no longer reserved.

Items you place in your cart are reserved for you for 20 minutes. If you do not check out before the timer runs out, they will be removed from your cart and made available for others to purchase.

However, your items have been saved so that you may re-add them to your cart. View your items.