... centre base length:6.5mOuter tent roofpolyester cotton canvas, 350g/m2, breathability, waterproof, UV proof Outer tent wallpolyester cotton canvas, 200g/m2, ... breathability, waterproof, UV proof Inner tent polyster cotton canvas,130g/m2, breathabilityGround ... Valid time Before 31th,October, 2012 canvas relief shelter tent