The Therm-a-Rest Base Camp 8482 Mattress is an incredibly comfortable & durable self-inflating mattress ideal for getting a great night s sleep while enjoying a family or car camping trip This Therm-a-Rest mat is made from a durable yet soft to touch polyester outer with a compressible foam core which expands when unpacked for easy self-inflation & excellent level of cushioned comfort This Basecamp Mattress is the regular version which measures at 183cm long with a standard 51cm width with a 5cm thickness for extra warmth & support Here at Outdoor Gear we think this is an outstanding self inflating mat that weighs in under a kilo & offers exceptional comfort & convenience & excellent support at an affordable price making it ideal for all season camping