Sea to Summit
Sea to Summit Ether Light XT Insulated
$199
Best Sleeping Pads · head-to-head
Sea to Summit Ether Light XT Insulated vs Big Agnes Rapide SL Insulated
A sourced, side-by-side comparison. Big Agnes Rapide SL Insulated is cheaper at $169.95. Every spec and price links to its source.
Big Agnes
Big Agnes Rapide SL Insulated
$169.95Cheaper
Which is better: the Sea to Summit Ether Light XT Insulated or Big Agnes Rapide SL Insulated?
On the specs we track, they're closely matched. The Big Agnes Rapide SL Insulated is the cheaper at $169.95.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Sea to Summit Ether Light XT Insulated | Big Agnes Rapide SL Insulated |
|---|---|---|
| US price | $199 | $169.95 |
| Brand | Sea to Summit | Big Agnes |
| Released | — | — |
| R value | 3.2 | 4.8 |
| Pad type | air | air |
| Weight grams | 490 | — |
| Thickness (cm) | 10 | 9 |
| Dimensions (cm) | 183 x 55 | — |
| Packed size (cm) | 24 x 11 | — |
| Insulation type | synthetic-fill | reflective-film |
| Inflation type | pump-sack | pump-sack |
| Shell denier | 30 | — |
| Shape | mummy | rectangular |
Sources — Sea to Summit Ether Light XT Insulated: seatosummit.com (verified 2026-07-11). Big Agnes Rapide SL Insulated: bigagnes.com (verified 2026-07-11).
What's the difference between the Sea to Summit Ether Light XT Insulated and Big Agnes Rapide SL Insulated?
Where the two actually differ on the specs we track (4 of 10). Matching specs are omitted.
- R value: Sea to Summit Ether Light XT Insulated 3.2 vs Big Agnes Rapide SL Insulated 4.8
- Thickness (cm): Sea to Summit Ether Light XT Insulated 10 vs Big Agnes Rapide SL Insulated 9
- Insulation type: Sea to Summit Ether Light XT Insulated synthetic-fill vs Big Agnes Rapide SL Insulated reflective-film
- Shape: Sea to Summit Ether Light XT Insulated mummy vs Big Agnes Rapide SL Insulated rectangular