The CamelBak Quick Stow Flask is ideal for endurance runners and outdoor athletes seeking a compact hydration solution on the trail. Soft polyurethane construction lets it fold up compactly for easy storage in your pocket or pack when it's drained. The 500ml size fits in most hydration vests, facilitating quick grabbing and stashing while you're running. Textured overlays help you get a grip, especially in wet outdoor environments. It features a wide opening for easy filling from a tap or drinking fountain.