Evoc FR Enduro Blackline Hydration Backpack Specification. Volume - 16L (M/L), 14L (S), 18L (XL) Weight - 1050g (size M/L) Size - 27cm x 56cm x 11cm (Size: M/L) Material - Nylon 210/D ripstop PU coated, N 600/D PU coated, Air Mesh, neoprene, breathable elastic waistband, transparent tarpaulin "