FITLY Soft Flask 3-Pack collapsible running bottles, Blue, Sporty — 150ml, 250ml, 400ml low-bounce TPU with bite-valves

Three collapsible running flasks in one pack — 150ml, 250ml and 400ml FITLY soft bottles for easy, low-bounce hydration on runs, rides and hikes.

The FITLY Soft Flask 3 Pack supplies three lightweight, collapsible bottles in blue so you can match liquid capacity to activity without carrying rigid bottles. Each flask compresses as you drink to reduce slosh and bulk, fits most jersey pockets, belts and vest pockets, and uses bite-valve mouthpieces for quick sips on the move. Constructed from BPA- and PVC-free TPU, the set is reusable, freezer-safe and designed for running, trail work, commuting and travel.

How do these soft flasks perform during a run?

The flexible construction minimizes bouncing and sloshing, keeping weight centered and movement smooth. Short bite valves let you drink quickly without stopping, and the circular lock on each cap reduces the chance of leaks while you move.

• Compressible TPU body reduces internal movement and bulk
• Shortened bite-valve for fast, controlled sips
• Secure circular locking mechanism for leak resistance
• Fits jersey pockets, running belts and vest pockets

Which size should I use for different activities?

The 150ml flask is made for short runs, gels or quick sips; the 250ml is a balanced daily option; the 400ml covers longer outings or warmer conditions. Carry one or combine bottles depending on route distance, weather and support access.

• 150ml: gels, short runs, lightweight carry
• 250ml: everyday training and tempo runs
• 400ml: long runs, hot days, minimal refill opportunities
• Mix sizes in a vest or belt to tailor total volume

How do I clean and store the FITLY soft flasks?

The TPU material rinses clean and can be turned inside out for drying. They’re freezer-safe for cold drinks or as compact ice packs, and fold flat when empty to save space in gear bags.

• Rinse with warm water and mild soap after each use
• Air dry mouthpiece and interior fully before storage
• Freeze partially filled to chill drinks or use as ice pack
• Collapse and store flat in pockets or packing cubes

Are these bottles durable and safe for repeated use?

Made from thermoplastic polyurethane (TPU), the flasks are designed to tolerate regular use and handle flexing without cracking. They’re free of BPA and PVC and the bite-valve design keeps drinking simple and hygienic when cleaned properly.

• Durable TPU resists tears and repeated folding
• BPA- and PVC-free materials for safer reuse
• Replaceable bite valves for extended life
• Compatible with water, electrolyte mixes, and gels

Who is this for: The FITLY Soft Flask 3 Pack is ideal for runners, trail runners, cyclists and outdoor enthusiasts who want multiple compact hydration options in one kit. Choose this set if you value low-profile, low-bounce bottles that tuck into pockets and vests, need freezer-chill options, or want lightweight spares for varied routes and climates.