The Multimat Superlite 38 Self Inflating Mat has been designed to offer you excellent comfort in a compact and lightweight self-inflating mat At 38mm thick standard version is 25mm it is significantly more comfortable and warm than the standard version This Superlite 38 is still made from the same ultra-lightweight foam core and durable 20D rip-stop nylon fabric and the extra thickness offers you extra warmth up to a tog value of an impressive 5 While there is a small increase in the pack size and weight it is still comes in much lighter than other self-inflating mats making it ideal for someone that needs that extra comfort when backpacking and enjoying adventure sports