The Raide Research Locking Cap Flask is a 650 mL soft flask made by HydraPak. Its low profile cap locks so the nozzle does not leak when a running belt or pocket squeezes the flask.

What it's for

Soft flasks carried in a waist belt or shorts pocket get squeezed with every stride, and a standard bite valve can dribble under that pressure. This flask has a cap you lock shut. Raide sized it at 650 mL to cover many runs, and it fits running shorts pockets and running vests.

Features

• Locking cap: HydraPak low profile cap that locks the nozzle closed
• Soft flask: collapses as you drink

Compatibility

• Filters: compatible with Katadyn BeFree and HydraPak filter tops
• Carry: running shorts pockets, belts, and running vests

Specs

• Volume: 650 mL
• Size with cap: 10.5 x 3 x 1.625 in
• Weight: 44 g empty, with cap
• Made by: HydraPak
• Warranty: lifetime