Thermarest Camp & Hike Neoair Xtherm Sleeping Pad Regular Vapor 11590. The unrivaled Triangular Core Matrix offers the best warmth-to-weight ratio of any air sleeping pad construction. The construction gives the 2.5 inch (6.4 cm) thick pad superior stability boasting the most inches of weld for maximum camp comfort. The packable pad boasts a 6.9 R-value allowing users to take it into the most extreme conditions. Available in several sizes including a roomy regular wide the XTherm features the high-performance WingLock valve allowing the pad to inflate three times faster thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads the NeoAir XTherm is made in market to ensure quality and minimize environmental impact.