On Ultra Vest Pro Unisex

Compact, durable, and ready for long adventures, the ON Ultra Vest Pro 10 L hydration vest is built for comfort and performance on the move. Weighing just 300 g, it’s designed with an innovative closure system that ensures a stable, no-bounce fit even during intense activity. The pack includes two 500 ml Hydrapak® flasks for convenient hydration and features a safety whistle for added security on the trail.

Storage is versatile and intuitive: large side pockets keep essentials close, while front and back zip pockets offer easy-access organisation. A removable seam-taped dry pack with a water-resistant zipper protects gear from moisture, making it ideal for unpredictable weather. With a total 10-litre dry pack volume, this vest balances lightweight design with generous capacity. Perfect for trail runs, long hikes, or endurance events where reliability and comfort are key.