Therm-a-Rest Antares 15 Review

May 15, 2014
Therm-a-Rest Antares 15
Therm-a-Rest_Mira-2-1
Therm-a-Rest Antares 15 Therm-a-Rest_Mira-2-1
GEAR INSTITUTE RATINGS
91
Compressibility
8
Warmth to Weight Ratio
7
Comfort
8
Durability
9
Value
9

The Good

  • Lightest bag in the class
  • Great warmth-to-weight ratio
  • Very durable

The Bad

  • Expensive
  • Potential cold-spots
  • Somewhat restrictive
THE VERDICT

The Therm-a-Rest Antares takes advantage of the fact that virtually every backpacker carries a sleeping pad as well as a bag. By relying on the pad’s insulation, Therm-a-Rest designers cut weight by eliminating most of the insulation in the bottom panel of the Antares. The result is a somewhat roomy down bag that proved to be among the warmest we tested, while also being the lightest.

FULL REVIEW

Compressibility
Because the Antares eliminates a significant portion of the insulation needed in the bag–the bottom panel holds very light down–the bag can be stuffed into a miniscule 7-inches by 12-inches.

Warmth to Weight
Properly attaching the bag to a sleeping pad is easy to accomplish thanks to a pair of broad, stretchy straps. Just slip the pad under those straps and your bed is made. The Antares kept even our coldest-sleeping tester warm and comfortable during a blustery night of snow flurries on Mount Rainier when temperatures bottomed out at 18ºF. 

Comfort
The reliance on a sleeping pad to provide insulation meant that the thin bottom of the bag had to remain on the pad. That was not a problem for back sleepers, nor for most side sleepers. But some of our team twist and turn, rolling from front-to-back throughout the night. Usually, they just roll the entire bag, but because the Antares requires strict adherence to its proper orientation, these active sleepers found they had to move solely within the bag rather than moving the bag with them. That also meant the hood couldn’t move with them on a full rollover, so they’d end up face down into the back of hood. Still, for the average sleeper, the bag was roomy enough to wiggle and shift a reasonable amount.

Durability
The 20-denier polyester shell showed no signs of wear or tear. The placement of the zipper and its backing effectively prevented fabric snagging in the zipper’s teeth. In short, we didn’t experience any problems or see any potential for problems.

Value
Though it may not be the best option for everyone, the lightweight design and incredible warmth more than offset the price of the Antares.

 


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WHERE TO BUY
MSRP
$400.00
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