Soft Flask 500 ml fits the Strive Fly, Strive 5, and Strive 10 running vests that are equipped with adjustable straps to secure the soft flask in place. The updated design features a wide opening and a self-sealing nozzle, which allows you to stay hydrated without slowing down. Soft Flask 500 ml is made of soft and lightweight TPU material in a stylish light gray shade and is free from BPA, phthalates, and PVC.

Soft flask with a wide opening and self-sealing nozzle
Soft Flask 500 ml has a new design with a wider, easy-to-grip cap that makes the bottle easy to open, fill, and clean.

Transparent TPU material, free from BPA, phthalates, and PVC
The soft flask is made of soft TPU material that allows you to easily remove and replace it in the pocket. It has a sleek design in black and light gray, and it is transparent so you can see how much liquid remains. The material is also free from BPA, phthalates, and PVC.

Soft flask for Strive Fly, Strive 5, and Strive 10
Soft Flask 500 ml is designed to fit the front pockets of the 2024 edition of Strive running vests: Strive Fly, Strive 5, and Strive 10. The adjustable straps ensure that the bottle stays securely in place, allowing you to stay hydrated without slowing down.