The Men's SITKA Kelvin HyperDown Pant is an insulated pant for hunting. Winter hunts will always be toasty when equipped with the right bottom layer. Worn over top or under a shell, the 800 fill power PrimaLoft Gold down blend traps heat close to the body while remaining compressible and lightweight when packed away. The side zippers are 7/8 length, making it super simple to put on or take off, without having to remove your boots.