The Ether Light XT Extreme is extra thick and exceptionally warm. The XT Air Sprung Cells provide four inches of stability and comfort, while dual-density layers of THERMOLITE insulation prevent convective heat loss and internal air movement. This results in true four-season performance.
Specifications:
| Regular | Large | Regular Rectangular Wide | Rectangular Large | |
| Dimensions | 72″ x 21.7″ | 78″ x 25.2″ | 72.1″ x 25.2″ | 79.1″ x 25.2″ |
| Packed Size | 6.9″ x 9.4″ | 7.3″ x 11″ | 7.3″ x 11″ | 7.3″ x 11″ |
| Stuff/Pump Sack Weight | 2.2 oz | 2.3 oz | 2.3 oz | 2.3 oz |
| Weight | 25.4 oz | 33.5 oz | 33.5 oz | 37 oz |
| R-Value | 6.2 | 6.2 | 6.2 | 6.2 |
| Thickness | 4″ | 4″ | 4″ | 4″ |
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