The Kelty Cosmic Mummy SI is a Self-inflating sleeping pad rated R3.9, weighing 2 lb 1.0 oz in its Regular size. It measures 1.0 in thick.
Self-inflatingType
MummyShape
GearScore63/ 100Overall, on the default algorithm
MSRPn/sRegular size · list price
Value Scoren/sBang for buck: price per GearScore point
Warmth (R-value)R 3.9Resistance to heat loss into the ground
GearScore breakdown
How this pad earns its 63 on the default algorithm, factor by factor
Have specific needs in mind — winter camping, ultralight backpacking, or a pad on a budget? Rank this pad against every other on your own custom scoring algorithm.
Open the full pad comparison →Specifications
| Type: | Self-inflating |
|---|---|
| Shape: | Mummy |
| R-value: | 3.9 |
| Thickness: | 1.0 in2.5 cm |
| Inflation: | Self-inflating valve |
| Fabric: | n/s |
| Durability score: | n/s |
| Features: | None listed |
How scoring works
The same GearScore engine the comparison pages use. This is the default weighting; open the full comparison to re-weight it around your trip.
GearScore blends published specs into one 0 to 100 number. Warmth is a "good enough" gate; the rest score on a sliding scale. Price is a lever you turn on when budget matters.
Customize on the full comparison →Warmth26%
Weight40%
Packed size23%
Price0% · lever
Durability11%
- Sufficiency
- Only needs to be good enough. Warmth works this way: clear your target and you're set, extra warmth adds no points.
- Monotonic
- More (or less) is always better. Lighter beats heavier and smaller packs beat bigger, so they score on a sliding scale.
- Preference
- Type, shape, and inflation are personal preference, never scored. They only filter the list.