Enduristan Add Pack Add some quick access storage to your backpack, tail bag, tank bag or any other piece of luggage that has a one inch wide strap to latch onto. Add Packs feature waterproof zippers and shape-holding construction to grant speedy retrieval of important items while on the go. Features: Waterproof shape-holding construction 3 layer fabric assembly: rubberized outer layer, 1000D nylon core, vinyl inner layer Welded seams Compatible with 25mm webbing (1) straps SM: 0.6 liters, 14cm L x 10cm W x 4cm D (5.5 L x 3.9 W x 1.6 D) LG: 1 liter, 15cm L x 14cm W x 6cm D (5.9 L x 5.5 W x 2.4 D)