The Salomon S/Lab Adventure 20 Set is a top-tier unisex running vest/backbag designed for those who embark on multiday trail running expeditions. This hydration pack, which includes flasks, is crafted in collaboration with athletes to meet the needs of high-performing individuals. With its 20-liter capacity, it offers ample storage while maintaining stability and easy access, making it perfect for challenging terrains and extended adventures. Designed for multiday trail running with a 20-liter capacity Includes two 500 ml flasks for hydration on the go Features SensiFit design for a secure and comfortable fit Quick Link sternum strap for easy adjustments Made with water-repellent fabrics for weather protection Equipped with multiple pockets for organized storage Reflective details enhance visibility in low-light conditions Constructed with durable 100D Spectra ripstop and bio-based Dyneema Includes a whistle for safety Compatible with a separately sold 2L reservoir for extended hydrati