Soft Flask Bundle 450ml and 250ml

The complete Endorphin hydration system. The 450ml and 250ml Soft Flasks together in one bundle, built to run as a pair in your Endorphin Belt for up to 700ml of hands-free hydration.

Run the 250ml in the front pocket (without your phone) and the 450ml in the rear pocket at the same time. Balanced weight distribution, water within reach from either hand, and zero bottles to carry. Or run each flask solo and match your setup to the session: the 450ml for long runs and race days, the 250ml for everyday miles where you want water on hand without carrying more than the run requires.

• Modular Carry System: Both flasks are sized for the Endorphin Belt. Run them together for 700ml of total capacity, or grab the one that fits the day. Front pocket, rear pocket, your call.
• Collapsible Design: Each flask shrinks as you drink, minimizing sloshing and staying quiet and stable as your run progresses.
• High-Flow Bite Valve: Leak-resistant, self-sealing nozzles on both flasks deliver quick sips without spillage and without breaking stride.
• Twist-to-Lock Tops: Zero accidental leakage. Lock it, load it, forget about it.
• Durable & Safe Materials: Made from BPA-free, odor-resistant materials that withstand frequent use and multiple refills.

Features:

• 450ml + 250ml capacity (700ml combined)
• Soft and flexible construction
• Twist-to-lock tops: zero accidental leakage
• Self-sealing bite nozzles: effortless drinking on-the-go
• Easy-to-grip caps: simple to open, fill, and wash
• Free from BPA, phthalates, and PVC
• 450ml color: light gray and transparent
• 250ml color: black with white logo
• Combined weight: 62 g

As a veteran-owned brand, we take pride in precision, grit, and gear that works when it matters most.