Kookaburra Waterproof Sun Sail Shade &ndash; Ivory - 16ft 5" X 13ft 1" Rectangular Blocks over 98% of harmful UV rays Waterproof High density polyester (160gsm UV stabilised) Machine washable at 40 degrees Celsius Available in either square, triangular, right angle triangular and rectangular shapes. These can be used alone or in combination to shade the required area