Rab brings together a whole bunch of technologies and materials in the Ultrasphere pad family. They boast a double appliance of TILT technology, which reflects some of your body heat right back, with minimal weight penalties. This model boasts insulation perfect for three season use, and also good for mild winter conditions, especially if used on top of a closed cell foam pad. The Ultrasphere lineup is designed for thru-hiking, bike-packing and multi-day mountain running - uses where every gram counts. Due to this, we recommend you be careful about where you set your pad, as the fabric is in the ultralight category of materials. It's wise to always inflate an airpad like this with the included pumpsack. Inflating by blowing might sound tempting, but that's a sure-fire way of introducing moisture to the insides of the pad - and that's very tough to get out. This pad is compatible with the strap system of the Mythic Ultra 120 Modular sleeping bag, and naturally all more regular sleepi