Thermarest trail pro gecko the best warmth to loft ratio of any self inflating backpacking mattress the trail pro is a comfortable and easy to use self inflating backpacking mattress and is now lighter we added air bolsters to shave precious ounces while keeping the mattress four season warmth the trail pro features our ultralight us sourced foam saving you weight and space in your pack without any sacrifice in comfort new this year is a regular wide size to maximize width without a