The Silva STRIVE FLY hydration waistcoat is the brand's lightest. It is designed for trail runners looking for a lightweight, high-performance product suitable for all conditions.

This waistcoat is designed to sit close to the body, but you can add an extra layer in cooler weather. Made from breathable, tear-resistant fabric that is easy to wash, the emphasis is on ventilation for greater comfort. On the rear there is a spacious mesh pocket, four pole attachments and the option of connecting the Silva quiver. On the front, there are two pockets for flanges with elastic straps, and two more for energy bars and extra equipment such as gloves. There's also a zipped pocket to fit a phone, complete with key hook. On the shoulders, there are clips for attaching pipettes.

Two straps are used to adjust the waistcoat at the chest. Safety features include reflectors for night-time racing and a whistle.