anyone ever heard of these i also got this when i got my northface pack....its rate to -10 ive googled and only came up with there website but theres no sleeping bags on there

I thought they made climbing gear, notably ice axes. I've never heard of Grivel sleeping bags.

ive looked all over and cant find none no where its really nice i actually was just laying in it lol too hot tho ...really just wondering what its made out of yeah there climbing gear suppose to be nice