Sea to Summit TPU Guide Map Case Medium 11in x 13in. The PVC-free TPU material is strong durable flexible andresistant to UV and extreme coldso it can be folded numeroustimes for pocket storage without cracking or discoloring.Designed with a detachable neck strap and corner anchorpoints for versatility. Specifications for Sea to Summit TPU Guide Map Case: Manufacturer: Sea to Summit Size: Medium Application: Carrying Length: 11 in Width: 13 in Features of Sea to Summit TPU Guide Map Case Durability It'll survive rough and tumble just fine but avoid sharp rocks and blades Waterproofness Can survive submersion with proper closure Best Use Anything outside Size Options Small: 12" x 8.3"Medium: 13" x 11"Large: 17" x 13" 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 Freezeproofwill not crack in extreme cold Abrasion resistant high strength PVC free TPU (thermoplastic polyurethane) material Package Contents: Sea to Summit TPU Guide Map Case Sea to Summit 385: TPU Guide Map Case Medium 11in x 13in