I was very skeptical about the +25 degrees claim of the Thermolite Reactor Extreme so, I set up this little experiment to see just how well the liner worked. Because sleeping comfort is such a personal thing, I will try and provide as much information here as possible so that you can make your own informed decision. I used a sleeping bag rated at the current outside temperature, a low R-value sleeping mat to insure I wasn't gaining a lot of warmth from the mat and a hammock to insure I wasn't gaining heat from an enclosed space. I also wore a medium weight base layer to provide a good surface to measure temperature that was not skin. The hammock was open and the sleeping bag top was fully exposed.
Temp: 30° F Precipitation: 60% Wind: 0-5 mph Conditions: Cloudy with light sleet
• Sea to Summit Thermolite Reactor - Extreme
• Marmot Trestles 30 Sleeping Bag
• Alps Ultra-Light Air Pad
• Eno hammock
• REI Medium weight base layer
Test conditions: All temperatures taken from three locations (center of chest, center of body and center of left thigh) using an infrared thermometer and then averaged. When I added the liner, I got out of the sleeping bag and allowed 10 minutes for it and the pad to cool.
Ground Temperature at start of test 28° F
Temperatures at 5 minutes w/o liner
• Outside of sleeping bag w/o liner 42° F
• Inside of sleeping bag w/o liner 66° F
• Base layer w/o liner 75° F
Temperature at 15 minutes w/o liner
• Outside of sleeping bag w/o liner 45° F
• Inside of sleeping bag w/o liner 69° F
• Base layer w/o liner 77° F
*Added Thermolite Reactor
Temperature at 5 minutes w/ liner
• Outside of sleeping bag w/ liner 43° F
• Inside of sleeping bag w/ liner 64° F
• Sleeping bag liner 68° F
• Base layer w/ liner 82° F
Temperature at 15 minutes w/ liner
• Outside of sleeping bag w/ liner 44° F
• Inside of sleeping bag w/ liner 74° F
• Sleeping bag liner 80° F
• Base layer w/ liner 86° F
As you can see from the numbers, the sleeping bag and pad was working at their designed levels and keeping me comfortable with a base layer temperature of 75-77° F with an outside temp of 28-30° F. When I added the liner, I went from being comfortable to being very warm as my base layer temperature went up to 82-86° F with the outside temp still at 28-30° F.
Now, about the +25° F claim. I have no way of knowing what a 7-9° F increase inside the bag equates to in temperature range outside the bag but, I can say this. For the size and weight, I would recommend it as a comfort item, if you can fit it into your budget.
While this test/review isn’t comprehensive, I did apply somewhat of a scientific approach and tried to give you something better that “this is great” or “this sucks”.
|商品尺寸||200.66 x 71.12 x 1.02 cm; 408.23 克|
|包装清单||Reactor Fleece Liner|