Dialed for movement and built for the realities of carrying water on the run, the Raide Locking Cap Flask delivers streamlined hydration without distraction. Designed in partnership with Hydrapak, it balances capacity, packability, and reliability—so whether you’re heading out for a quick loop or a longer effort, your water stays secure and accessible every step of the way.

At the core of its performance is a low-profile locking cap that prevents unwanted leaks caused by pressure inside belts or packs. The design keeps the nozzle sealed when you need it and easy to access when you don’t—eliminating the common frustrations of soft flask carry. Flexible construction allows the flask to compress as you drink, reducing slosh and bulk while maintaining a comfortable fit against the body.

Available in two purpose-built sizes, each flask is tailored to a specific style of movement. The 650mL version hits the ideal volume for longer runs, while the compact 360mL option is designed to integrate seamlessly into minimalist setups, including belt systems and short pockets. Lightweight, durable, and thoughtfully engineered, the Raide Locking Cap Flask keeps hydration simple, efficient, and exactly where you need it.

Features:

• Locking Cap Design: Low-profile nozzle locks to prevent leaks under pressure in belts or packs
• Soft Flask Construction: Flexible design compresses as you drink to reduce slosh and bulk
• Hydrapak Collaboration: Built with trusted materials and durability, backed by a lifetime warranty
• Lightweight Build: Minimal weight for efficient carry during runs and high-output activity
• Two Size Options: Choose between higher volume or compact carry depending on your needs
• Streamlined Fit: Designed to integrate easily into belts, packs, and performance apparel

Specifications:

650mL Flask:

• Volume: 650 mL
• Dimensions: 10.5" x 3" x 1.625" (with cap)
• Weight: 44 g (empty, with cap)
• Compatibility: Works with Katadyn BeFree and Hydrapak filter tops

360mL Flask:

• Volume: 360 mL
• Dimensions: 7.5" x 3" x 1" (with cap)
• Weight: 35 g (empty, with cap)
• Compatibility: Not compatible with Katadyn BeFree or Hydrapak filter tops