The Thermocore XPD is our thickest, warmest trekking mat offering 4-season performance and designed for users seeking the ultimate comfort in any condition. The unique vertical walled design produces a larger sleeping area than a traditional mat construction whilst also maximising the heat retaining properties. By using our aluminium Thermal Reverb technology, combined with layers of strategically placed film helps reflect heat back towards your body to keep you warm. The 20D top and bottom fabric are made from recycled nylon with a TPU lamination that is lighter, more compressible, and more environmentally friendly than traditional PVC constructions. This results in a smaller pack size without compromising on comfort. Our Silent Sleep technology also ensures a peaceful night’s sleep by eliminating rustling or crinkling noise when moving. The air-filled welded channel construction moulds to the contours of your body whilst the Airlock Valve allows for totally custom firmness than keeps you off the ground and snoozing all night.Vango Thermocore XPD Features: 20D Recycled Nylon Fabric - Extremely lightweight and durable construction Ultralight TPU Membrane - An ultralight TPU membrane is used within the core structure to minimise weight and increase durability TPU Lamination Technology - Modern TPU fabric lamination is lighter and more environmentally friendly than traditional PVC constructions. The result is a smaller pack size thats quicker and easier to inflate, deflate and pack away 4 layers of strategically placed Thermal Reflective Film that traps heat and reflects it back to the user for extra warmth and comfort when sleeping. Air Filled Welded Channels - Which mould to the contours of the surface and your body for a more comfortable sleep Thermal Reverb - Our non-woven aluminised fabric layers are strategically placed to reflect heat back to the user to increase warmth and heat retention Soft Stretch Sidewalls - Super soft elastic yarn is knitted into an ultra flexible fabric thats highly compressible for easy inflation and deflation Dual Function Airlock Valve - Quick inflation/deflation with secure lock system when not in use. Vertical Walls - A 3-dimensional construction with vertical walls produces a larger sleeping area without adding to the pack size for a more comfortable nights sleep Silent Sleep - Crinkle free fabric for a quiet nights sleep Integrated Pump-Sack - The carry bag doubles as a pump-sack for rapid inflation Antimicrobial Treatment - Extends the life of your mat by preventing mold or bacteria build up inside the mat if its inflated by mouth Repair Kit Included - Patch your mat in an emergency if the worst happens and you get a puncture