The Silva Soft Flask 500 ml fits the Strive Fly, Strive 5, and Strive 10 running vests that are equipped with adjustable straps to secure the soft flask in place. The updated design features a wide opening and a self-sealing nozzle, which allows you to stay hydrated without slowing down.

Features
Transparent Ð see how much liquid remains
Self-sealing nozzle Ð easy to drink on-the-go
Easy-to-grip 40 mm cap Ð easy to open, fill and wash
Material: soft and flexible TPU material
Free from BPA, phthalates, and PVC
Color: light gray and transparent
Weight: 44 g_