Flex Mono Mesh tunnel provides a breathable attachement point for all belts; Phone compatible with zip secure pocket; Attach to any waist belt for added storage and organization; Ultra lightweight system; Reflective accents for visibility; Compatible with all Signature Series and Ultralight collection waist belts; Materials: 150g Flex Mono Mesh, MicroMono Mesh, 20D Nylon 66 Silicone/PU, 4-way stretch Nylon/Elastane with rip stop for durability; Volume: 0.8L; Weight: 1.1 oz.