Platypus Big Zip EVO

1.5L 2L 2L lumbar 3L Capacity 50 fl oz 70 fl oz 70 fl oz 100 fl oz Weight 5.6 oz / 0.16 kg 6.0 oz / 0.17 kg 5.4 oz / 0.15 kg 6.5 oz / 0.18 kg Width 8.5 in / 21.6 cm 8.7 in / 22.1 cm 14 in / 35.6 cm 9.0 in / 22.9 cm Length 13.0 in / 33.0 cm 15.0 in / 38.1 cm 8.7 in / 22.1 cm 17.2 in / 43.7 cm Film Polyurethane / Polyethylene Bite valve material Silicone