The TPU Guide Map Case is made from TPU, with a welded construction and a super strong 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 for versatility. Features Totally welded construction - no stitches Individually tested - water and dustproof 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 Freezeproof—will not crack in extreme cold Abrasion resistant, high strength, PVC free, TPU (thermoplastic polyurethane) material Size Guide Small: 12" x 8.3" Medium: 13" x 11" Large: 17" x 13"