Made from TPU (thermoplastic polyurethane), totally welded construction and a superstrong Ziploc® closure to provide fully waterproof and dustproof performance. The PVC-free TPU material is strong, durable, flexible and resistant to UV and extreme cold – so it can be folded numerous times for pocket storage without cracking or discoloring. Designed with a detachable neck strap and corner anchor points forversatility.- Lightweight, high performance design- Totally welded construction - no stitches- Individually tested - water and dust proof- Super strong Ziploc® closure- Anchor points on corners for versatile attachment- Detachable neck strap- Flexible and crease resistant - can be folded to fit in a pocket- UV resistant for superior long lasting clarity- Abrasion resistant, high strength, PVC free, TPU material Size: Small - Weight 56g Size 212mm x 302mm Medium - Weight 78g Size 282mm x 332mm Large - Weight 102g Size 332mm x 430mm