Raide 650ml Locking Cap Flask

• No more damp hip or shorts from a valve popping open under pressure, the locking cap stays sealed until you want it open
• Soft and collapsible, so it shrinks down as you drink and never turns into a hard lump digging into your back
• Easy to top up at streams or taps thanks to a wide opening, and works with popular filter attachments if you want to filter on the go
• One less thing to think about mid-run, since it's built specifically to handle the squeeze of a loaded belt or vest pocket

• Volume: 650mL
• Weight: 44g empty (with cap on)
• Dimensions: 10.5" x 3" x 1.625" (with cap on)
• Cap: Hydrapak low profile locking cap, 42mm opening
• Filter compatible: fits Katadyn BeFree and Hydrapak filter tops
• Material: soft, collapsible flask body
• Made by Hydrapak

• Runners who want a spare or replacement flask for their Raide LF 2L Running Belt
• Anyone upgrading from a bite valve soft flask that's been leaking under pressure in a belt or vest
• Long runs, mountain missions and multi-stop training days where topping up from a stream or tap matters
• Less suited to runners who want a smaller, soda can sized flask for short, low key runs. Our Raide 360mL Locking Cap Flask tucks neatly into the front of the LF 2L belt for exactly that.

Leaking flasks are one of the most common complaints we hear from runners using belts, and it usually comes down to the valve, not the belt itself. This flask fixes that specific issue with a locking cap that's built to handle the pressure of being squeezed all run long, and it's the same flask that comes standard with the LF 2L belt, so it's a genuine match rather than a random spare. It's a small, unglamorous product, but it's the kind of detail that actually changes how much you enjoy carrying water on the run.