The Therm-a-Rest NeoAir Xlite Mattress delivers more warmth and comfort per gram than any other three-season air mattress available and is one of the most trusted air mats out there The NeoAir s soft touch fabrics and baffled internal structure provides unrivalled stability while the ThermaCapture technology coupled with Triangular core Matrix construction minimises heat loss so that you can get a great night s sleep Weighing in under 500g and with a pack size of less than a one litre water bottle this LARGE version of the NeoAir mat is ideal for the discerning alpinist thru-hiker or wildcamping minimalist who rsquo s counting every ounce there is simply no better choice to assure the kind of rest you need to enjoy tomorrow This mat has been around for a few years now but has won many awards and has received recognition for its design including Editors Choice for The Backpacker Magazine 2009 Editor s Choice for Trek Mountain Top Pick for HikeLighter com Top Pick for Best Ultralight Sleeping Pad Outdoor Gear Lab updated 2018