Platypus Platy SoftBottle w-HyperFlow Cap The SPECS Cap: Hyper Flow The SPECS for .5 Liter Volume: .5 liter Dimension: 5 x 12in. / 12 x 29 cm The SPECS for 1 Liter Volume: 1 liter Dimension: 6 x 13in. / 15 x 33 cm