“I tested it in in extreme conditions and it will keep you alive where other materials will fail”


Cocoon 3.0 (10°F / -12°C)
$549.00
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Built to stay warmer and drier by managing the moisture that traditional bags trap.
Why is it different?
- Head In Heat Retention Designed to tuck fully inside for added warmth, while Keloflex™ manages breath moisture that would otherwise dampen insulation and compromise traditional bags.
- Helps regulate body heat for more balanced comfort through the night
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Maintains stable warmth in changing outdoor conditions
- Manages moisture from sweat and condensation to reduce cold, clammy discomfort
- Built with proprietary Keloflex™ for next-generation sleep system performance
What Real Comfort Sounds Like
Keloflex is the real deal. Tested it in pretty extreme conditions and the stuff will keep you alive where other materials will fail.
“It’s like sleeping in a cloud.”
It’s like sleeping in a cloud.
“I tried it in December, in Idaho, in snow and wind. I slept very well! I couldn’t believe it.”
Keith is my dad’s friend so I was always pretty skeptical of the sleeping bags he’d get, until I tried it myself – in December, in Idaho, totally exposed to the 5 mph wind and 2 inches of snow we got that night. I slept very well! I couldn't believe it. Even my feet were warm, with little drifts of snow around them. Amazing stuff.
“I am finally able to sleep comfortably through the night. I haven’t been able to do that for years.”
Thanks to sleeping in the K3Core GameChanger I am finally able to sleep comfortably through the night. I haven’t been able to do that for years. After seeing some of the testing they were doing with the GameChanger, I tried it by itself, outside in the early winter on a cot. It rained, then snowed, then rained some more. The outside was soaked, but, inside I was warm and dry all night. The temperature was just like I was sleeping inside. It works.
“I wouldn’t dream of using anything else.”
The K3Core blanket changed my sleep comfort dramatically. I used to spend every night fluctuating between way too hot and way too cold, back and forth each night. My sheets and blankets were wet and smelly all the time. I love how easy it is to make the bed. I love how I am now able to get perfectly warm and comfortable within seconds after climbing in. After more than a year-and-a-half of great comfort every night using the K3Core blanket, I wouldn't dream of using anything else.
“It was my comfort blankie, I started sleeping in it every night.”
I’ve used the K3Core Sleeping bag, the Cocoon for years. The best night’s sleep I ever had was using the K3Core GameChanger on top of my bed. It was my comfort blankie. I started sleeping in it every night. Recently I tried the K3Core Duvet. I couldn’t believe that it was even more comfortable.
“It is like crawling back into your mother's womb.”
The first night I used it I woke up and realized that it had been the best night’s sleep I had ever had. It was remarkable, especially in the winter. The thing I hated most was having to get up in the morning and turn up the heat. The best thing is getting to crawl back into bed. It is like crawling back into your mother's womb.
“Recently received the K3core Duvet. It was the deepest night’s sleep I have ever had. We both love it and it looks great!”
My husband started using his K3Core GameChanger on top of our bed each night. He loved the comfort. I really liked my minky blanket. Recently my husband received the K3Core Duvet. We tried it. It was the deepest night’s sleep I have ever had. We both love it and it looks great! Now we get to sleep together again.
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