Knapbag (Green Rip-stop nylon makes it safe for outdoor use on rocks, gravel, pine cones, etc Self-Inflating lounge chair is perfect for camping and hiking as well as days at the beach and more. PORTABLE: Knapbag comes with a handy small carrying case so you can take it anywhere you want. It is easily deflated, and stored into this small carrying case, so prepare to take your Knapbag with you everywhere you go. Dirt and Moisture Repellant, easy to clean with a damp rag Holds up to 440 lbs. Comes with a Five year warranty.