Crazy Creek Hex 2.0 Original Chair 8mm high-density cored EVA closed-cell foam provides more insulation and comfort without added bulk. Outer shell of durable 210D coated custom ripstop nylon protects from wet ground. Inner surface of water-resistant- breathable 70D coated custom ripstop nylon is more durable-easy to keep clean- provides better insulation and is totally sealed from sand and dirt. Virtually unbreakable carbon-fiber stays. Tight-knit nylon webbing for superior tensile strength.