The XBP Expandable Bottle Pouch is designed to attach to MOLLE-compatible bags and packs. It has TPU-840D nylon composite backing and comes with two TacTie PJC5 Polymer Joining Clips for modular attachment. The XBP fits a wide range of common bottles including the 32 oz. Nalgene widemouth bottle. YKK Zippers with Positive Grip Zipper Pulls Dual Nylon Fabric Construction TPU-840D Nylon Composite Attachment Backing Refined Construction with Elegant Inlays Anti-Counterfeit Logo Embossed 420D Nylon Liner Teflon fabric protector for grime resistance and easy maintenance