The NRS River Bed Sleeping Pad lets you sleep anywhere your adventurous heart desires but your back may dread. Designed for multiday raft trips, this waterproof camp bed is perfect for camping by boat or by car. Rugged, waterproof PVC shell Polyurethane foam has a medium-firm density that shields you from debris Two cinch straps with quick-release buckles help keep your sleeping pad rolled Inflation valve allows the pad to self-inflate Be careful not to over-inflate