HydraPak sports bottle Stow 500 ml — collapsible soft flask, Mammoth Grey

HydraPak Stow 500 ml is a collapsible soft sports bottle designed for lightweight hydration on the move. With a 500 ml capacity, the flexible body compresses and folds flat when empty to minimise pack bulk. The bottle features a wide opening for straightforward filling and cleaning and a leak-resistant valve to reduce spill risk during activities. Constructed for packability and repeated outdoor use, this soft flask is suitable for running, cycling and short hikes where saving weight and space is important.

Advantages

The collapsible design reduces storage volume when not in use, helping to save space in packs and pockets. A wide mouth makes filling from taps or water carriers quick and enables easier cleaning and drying. The leak-resistant valve provides reliable flow control during movement, and the soft, flexible material keeps the bottle lightweight while remaining durable enough for regular outdoor use. The simple construction also simplifies maintenance and reduces the overall carried weight compared with rigid bottles.

Suitable for

• Trail running and road runs where minimal weight is required
• Cycling and commutes with limited bottle cage space
• Day hikes and short excursions requiring compact, packable hydration
• Events and training sessions where quick refills and easy cleaning matter

Key specifications

• Capacity: 500 ml
• Material: flexible, BPA-free soft plastic (collapsible construction)
• Mouth opening: wide for easy filling and cleaning
• Valve type: leak-resistant flow valve
• Weight: lightweight design for reduced carry load
• Colour: Mammoth Grey

How to use

Fill the Stow bottle through the wide opening and secure the cap before use. Squeeze the soft body to control flow through the valve while drinking. After use, rinse thoroughly with warm water and turn inside out when possible to air dry; the collapsible form allows the bottle to be folded flat for storage. Avoid exposing the bottle to high heat or prolonged direct sunlight to preserve material integrity.

Usage recommendations

For best results, rinse the bottle soon after use and allow it to dry completely before storing folded. Use the wide opening for easy addition of ice or electrolyte mixes, and check the valve regularly for debris to maintain leak resistance and consistent flow.