DESIGN FEATURES 2.5" thick, 3+ season Air Core pad insulated with PrimaLoft insulation and hi-density foam. Full length 2.5" thick pads available in multiple lengths and shapes are lightweight and pack smaller than a self-inflating pad. Packs down to a compact size ranging from 5" x 13" to 7" x 13" depending on model Unique construction technique prevents the insulation from shifting inside the air chambers. The I-beam construction technique is functionally superior to the typical welded-through construction of other air mats. Die cut holes in each I-beam allow air to flow freely between chambers giving constant support and comfort I-beam construction makes inflation quick and easy Durable 70 denier hexagonal nylon rip-stop top and 70 denier nylon bottom with an internal polyurethane coating for waterproofness Durable, water repellent (DWR) external coating sheds water and stains PrimaLoft features a silicone treatment which serves as an anti-microbial within the pad Exclusive: Non-breakable, EZ-Flate brass valve for easy closure Use a closed cell foam pad with any of our Air Core Pads for extra insulation, especially when camping on frozen ground, snow or cold rock. The foam pad provides a barrier against the cold from the ground. REM Dual Core Pads come with a stuff sack, repair kit, and a 100% guarantee Storage: We recommend storing the Dual Core pad flat, unrolled and uninflated with the valve open so moisture may escape. Dual Core pads are semi self inflating and require some inflation by users.