Perforated and ridged back-panel foam for optimal comfort and ventilation Internal, secure-zip pocket with key-clip webbing External stretch-mesh stash pocket with a secure bungee loop Technical nylon face fabric with an embossed pattern Lightly water resistant Volume: 4 litres Dimension: 13.5 cm X 37 cm X 10 cm Material composition: 100% Nylon More Info Sport: Outdoor Product code: NO0A3S7Z-ZV2 The North Face Lumbnical Waist Bag