What Silva say…

Soft Flask 250 ml is a flexible bottle that fits the Strive Fly Vest, Strive 5 Vest, and Strive 10 Vest. The new design with a wide opening makes it easy to fill and clean, and the self-sealing nozzle has a large opening for convenient on-the-go hydration. The Soft Flask 250 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 250 ml has a new design with a wider, easy-to-grip cap that makes the bottle easy to open, fill, and clean. The nozzle is self-sealing, holds a substantial amount of liquid, and has a large opening, allowing you to drink smoothly while running.

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 Vest, Strive 5 Vest, and Strive 10 Vest
Soft Flask 250 ml is designed to fit the front pockets of the 2024 edition of Strive running vests: Strive Fly Vest, Strive 5 Vest, and Strive 10 Vest. The adjustable straps ensure that the bottle stays securely in place, allowing you to stay hydrated without slowing down.