Combining low weight, a small packing size, and a high level of comfort and insulation, the Helium 3.8 Warmzone Mat sleeping pad is an self-inflating sleeping pad ideal for year-round use.This Mountain Equipment sleeping pad will perfectly insulate you from the cold while ensuring a high level of comfort for your nights.38 mm dual-sided lightweight foam for low bulk and optimal comfortLightweight and durable 75D polyester upper surface75D polyester base with reinforced non-slip finishLarge insert valve for efficient inflation and deflationComes with a lightweight storage bagR-Value: 3.6Weight: 800 g Mountain Equipment Helium 3.8 Warmzone Mat - Sleeping pad | Hardloop