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Sea to Summit Ether Lite Xtreme - Women's Review

It's ultra-warm and comfortable, and is made for a woman's shape; however, it's a bit heavy for backpacking
Sea to Summit Ether Lite Xtreme - Women's
Photo: Sea to Summit
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Price:  $200 List | Check Price at REI
Compare prices at 3 resellers
Pros:  Very warm, comfortable, quiet, included air pump
Cons:  Heavy, expensive
Manufacturer:   Sea to Summit
By Jessica Haist ⋅ Review Editor  ⋅  Jun 11, 2021
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72
OVERALL
SCORE


RANKED
#5 of 11
  • Warmth - 25% 10
  • Comfort - 25% 9
  • Durability - 10% 7
  • Weight - 25% 4
  • Packed Size - 15% 5

Our Verdict

The Sea to Summit Ether Light Xtreme is one of the warmest sleeping pads that is specifically made for women. Its high 6.3 R-value makes it a great choice for winter camping trips. Our only hesitation in recommending this wholeheartedly is that it is quite heavy. It is heavier than larger, unisex pads that have higher R-values, so even though it's made for a woman, you could find a warmer, bigger pad, which still weighs less. However, the Ether Light Xtreme is much more comfortable than many of the options created for a woman's shape, which means it's wider in the hips and has blissfully quiet materials that don't crinkle with every movement. If you don't have to carry it too far, the Ether Light Xtreme could be a great choice for your cold-weather camping needs.

Compare to Similar Products

 
Awards  Editors' Choice Award Top Pick Award Best Buy Award  
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Check Price at REI
Compare at 3 sellers
Check Price at REI
Compare at 3 sellers
$100 List
Check Price at REI
$79.95 at Backcountry
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Overall Score Sort Icon
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85
79
63
63
Star Rating
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Pros Very warm, comfortable, quiet, included air pumpVery light, super compact, comfortable, versatile, warmer than normal XLiteComfortable, quiet, lightweightComfortable, good valve system, warmInexpensive, comfortable, durable
Cons Heavy, expensiveNoisy, expensive, delicate materialsExpensive, heavier than the NeoAir XLiteHeavy and bulkyBulky and heavy
Bottom Line It's ultra-warm and comfortable, and is made for a woman's shape; however, it's a bit heavy for backpackingThis super light and compact sleeping pad is a great choice for someone looking to go fast, light, and warmA versatile sleeping pad that is incredibly comfortableA comfortable, warm sleeping pad with unique "rails" that will cradle you when you sleepNotable for its price and performance
Rating Categories Sea to Summit Ether... Therm-a-Rest NeoAir... Sea to Summit Ether... REI Co-op AirRail Plus Therm-a-Rest Trail...
Warmth (25%)
10.0
9.0
7.0
7.0
8.0
Comfort (25%)
9.0
7.0
9.0
8.0
8.0
Durability (10%)
7.0
6.0
7.0
9.0
9.0
Weight (25%)
4.0
10.0
8.0
3.0
3.0
Packed Size (15%)
5.0
9.0
8.0
6.0
4.0
Specs Sea to Summit Ether... Therm-a-Rest NeoAir... Sea to Summit Ether... REI Co-op AirRail Plus Therm-a-Rest Trail...
Measured Weight 24.2 oz 12 oz 15 oz 25 oz 25.6 oz
ASTM R Value 6.3 5.4 3.5 3.7 4.9
Thickness 4 in 2.5 in 4 in 1.5 in 1.5 in
Width 21.7 in 20 in 21.5 in 23 in 20 in
Packed Size 6.9 x 9.4 in 9 in x 4.1 in 11 x 4.5 in 9.84 x 5.51 in 11.02 x 5.91 in
Tested Length 66 in 66 in 66 in 66 in 66 in
Bottom Material 30D / 40D nylon 30D rip HT Nylon 40D nylon 75D polyester 75D polyester

Our Analysis and Test Results

Warm and comfortable, the Sea to Summit Ether Light Extreme is a...
Warm and comfortable, the Sea to Summit Ether Light Extreme is a great choice for cold weather basecamping.
Photo: Ian McEleney

While the Sea to Summit Xtreme scores high in the warmth and comfort departments, it let us down in the weight category. If you're after a pad that's strictly for lightweight backpacking, you'll want to look elsewhere for a lighter option.

Performance Comparison


The Ether Light Xtreme will keep you insulated from the snow.
The Ether Light Xtreme will keep you insulated from the snow.

Warmth


This pad is at the top of the charts for the warmth metric. It has a 6.3 rating, which is almost a full point warmer than the competitors. Sea to Summit uses layers of synthetic insulation to create this insulating warmth from the ground. In our experience, you want a pad with at least a 4.0 R-value to use when sleeping on snow surfaces, so this will give you some extra buffer. However, we always recommend using an extra foam pad for insulation in winter camping situations.

Comfort


The Ether Light Xtreme is filled with layers of synthetic material...
The Ether Light Xtreme is filled with layers of synthetic material and is a cushy 4" thick.

We love Sea to Summit's pad shapes, which are specifically for women. They're "oval" shaped versus a traditional "triangle" shape, which is more so made for men's wide shoulders. In addition, all their pads are on average 1.5 inches wider than the competitors (other than rectangular shaped pads) and have that extra space near the middle of the pad for wider-hipped individuals. The Ether Light Xtreme is no exception and is even slightly wider than other models. It's exceptionally comfortable and has four inches of cushiness. Sea to Summit's Air Spring Cell Construction makes the pad feel very stable when you're lying on it. We also love the quiet materials, which compared to the other, lighter products we've tested, means you won't wake your tent-mate up every time you roll over. This often equates to a better night of sleep.

We love the shape of the Xtreme because it's wider in the hip areas...
We love the shape of the Xtreme because it's wider in the hip areas to better form to a woman's shape.
Photo: Jessica Haist

Durability


The Ether Light Xtreme is made from a 30D/40D nylon material. This denier weight of material puts it squarely in the middle of the pack in terms of durability, and we have not experienced any durability issues with this product. We recommend using its stuff sack and always having some type of ground cloth to protect it from getting punctured. We like that the Ether Light Xtreme has an anti-microbial treatment added to the internal lamination to prevent mold growth inside the pad. The included air pump stuff sack also helps to prevent moisture from getting inside since you're not blowing it up with your mouth, and moisture from your lungs won't get in. This is especially helpful in a cold-weather context when that moisture can freeze and reduce warmth.

The Ether Light Xtreme's included pump sack is handy to blow up this...
The Ether Light Xtreme's included pump sack is handy to blow up this thick pad. This will also help keep moisture out of your pad and avoid mildew growing.
Photo: Ian McEleney

Weight


We were disappointed when we discovered that the Ether Light Xtreme weighs over a pound and a half. We think this is the Xtreme's biggest downfall, as many of the pads in this review are much lighter (and have bigger overall dimensions) and have excellent warmth-to-weight ratios. The included pump/stuff sack weighs two ounces.

Packed Size


The Xtreme packs down relatively small for how much insulation it...
The Xtreme packs down relatively small for how much insulation it has, but it is definitely not the smallest of the bunch.

It's hard to get the Ether Light Xtreme down to its original packed size and will take a couple of times to roll all the air out. It does pack down to a decent size for its weight and warmth, but with all that synthetic material inside, it's not the smallest.

Value


The Ether Light Xtreme is a pricey pad and is up there with the highest-priced items we've tested. While it is made from high-quality materials and is a good product, it's not the greatest value of the bunch.

Conclusion


If you're looking for a super warm, quiet, and comfortable pad that's made specifically for a woman's dimensions, the Ether Light Xtreme could be a good choice. It is a bit on the heavy side, and wouldn't be our first choice to take on long, warm weather backpacking trips. However, it will thrive on cold weather trips and the warmth it will give you could even be worth the weight in your pack.

This is a very comfortable and warms sleeping pad, but too heavy to...
This is a very comfortable and warms sleeping pad, but too heavy to carry on extended trips.

Jessica Haist