FITLY Soft Flask 3-Pack, foldable leak-resistant TPU bottles 5 oz, 8.5 oz & 13.5 oz, Black Sporty

The FITLY Soft Flask 3 Pack are foldable, leak-resistant TPU hydration bottles (150ml, 250ml, 400ml) that compress as you drink so they’re lightweight and pocket-friendly for running, hiking and travel.

These three soft flasks give you a compact hydration system that adapts to short sips, steady runs and longer outings without the bulk of rigid bottles. Made from BPA- and PVC-free thermoplastic polyurethane, each bottle features a quick-flow bite valve and a circular locking closure to reduce spills. The set is designed to fit jersey pockets, running belts, hydration vests and backpacks, and each flask folds flat for neat storage when empty.

How do these soft flasks improve on-the-go drinking?

The flexible construction compresses as liquid is consumed, which cuts down on sloshing and keeps the bottle secure in pockets or packs. Shortened bite valves let you sip quickly and control flow without stopping your activity. A locking ring helps prevent leaks during transport.

• Shrink-as-you-drink design reduces bounce and wasted space
• Fast-flow bite valve for quick, controlled sips
• Circular locking mechanism for leak-resistant carry
• Lightweight TPU construction minimizes added weight

Which sizes suit different activities?

The three included capacities cover a wide range of needs: 150ml for quick doses or gels, 250ml for moderate runs and rides, and 400ml when you need extra fluid on longer outings. Use a single flask for short sessions or combine sizes to tailor your load for the day. Their slim shapes fit common pockets and vest compartments more easily than rigid bottles.

• 150ml (5 oz): ideal for energy gels, quick sips, or kid-sized portions
• 250ml (8.5 oz): balanced for tempo runs and short rides
• 400ml (13.5 oz): extra capacity for longer runs, hikes or travel
• Pack multiple sizes together to match route and duration

How do you clean and store the flasks?

The smooth TPU interior rinses clean and dries quickly when left open; use warm water and mild soap after electrolyte mixes or gels. The material tolerates freezing, so you can freeze a filled flask to keep drinks cool or use it as a compact ice pack. When empty, each bottle folds flat for compact storage in gear or luggage.

• Rinse after each use; use mild soap for concentrated drinks
• Freeze for cooling or use as a small ice pack
• Fold flat to save space in packs and drawers
• Replace bite valve if wear affects flow or sealing

Are these bottles durable and safe to use?

Constructed from TPU and free of BPA and PVC, the flasks are made for repeated active use and pack down without creasing like rigid bottles. The materials are resilient to regular bending and can handle being carried in pockets, vests, and backpacks. Follow basic care to prolong lifespan and maintain hygiene.

• BPA- and PVC-free thermoplastic polyurethane construction
• Designed to withstand repeated folding and carrying
• Secure locking ring reduces accidental leaks during transit
• Suitable for water, electrolyte drinks and gels (rinse after use)

Who is this for: The FITLY Soft Flask 3 Pack fits runners, trail athletes, cyclists, day hikers and travelers who want versatile, lightweight hydration without bulky bottles. It’s well suited to anyone who favors pocket-carry or vest-compatible solutions and likes to switch capacities depending on route length, weather and personal needs. If you want compact, leak-resistant flasks that shrink as you drink and store flat when empty, this set gives three ready options for training and adventure.