ChinookRest Self-Inflating Air Mattress- These all-purpose, self-inflating mattresses are ideal for any backpacking excursion or family camping trip Features: - Top Fabric: Lightweight and durable, TPU-coated diamond ripstop nylon fabric with an anti-slip surface to help reduce sleeping bag slippage - Bottom Fabric: Heavy-duty, TPU-coated nylon with a non-slip surface - Top quality, super strong brass valve for quick and easy inflation and deflation. Will not break in sub-zero weather. - Superior open-cell foam for rapid inflation/deflation, excellent insulation and extra comfort on rough or uneven surfaces - Comes with a stuffsack and repair kit Specifications: - 76" x 25" (193 x 63 cm) - Thickness: 2" (5 cm) - Weight: 4 lbs 1 oz (1848 g) - R-Value*: 6.2" * The R-value is a measure of insulating properties. It describes an item"s resistance to heatflow. The higher the R-value number, the slower heat will escape. To achieve the listed Chinook R-values, ensure your mattress is fully inflated.