abstract background blended brown color colored colour coloured fabric flexible-membrane High-Density-Polyethylene interconnected intermeshed interwoven knitted light light-weight linked low-degradation material plastic plastics shade-cloth shade-sail shady stretch surface surfaces Tan texture textured textures thermoplastic UV-block UV-inhibitors UV-resistant wallpaper weave woven creased creases appearance blue fine monofilament blades glasses protecttion shades spectacles sun sunglasses UV eyewear protection specs architecture building campus school tower activities fishing ocean people