Hydration bag for trail running and marathons. Brand new, unused. I bought it to use for training, but the size didn't fit. The tag has been removed, but it has not been worn. Retail price: ¥18,700 (tax included) Size: M Capacity: 6L + 500ml QUICK STOW™ flasks x2 included QUICK STOW™ Flask: A flask-type reservoir bag ideal for hydration during running. It features an unparalleled high-flow bite valve, making hydration during exercise more comfortable. ■Features ・3D ventilation mesh - Provides a stress-free wearing experience as if you are wearing air. ・Dual chest straps - Can be attached to any position for an optimal fit. ・Large front pockets - Highly elastic and securely hold supplies, making them easy to take out during activity. ・Reflective reflectors - Placed on the logo, sides, and shoulders for safety in the dark. ・Secure phone pocket - A zippered pocket to prevent smartphones and other items from falling out. ・Overflow pocket - Convenient for storing jackets, etc. ・Trekking pole attachment ・Safety whistle - Equipped with a whistle that is useful in an emergency. ・CRUX® Reservoir 1.5L compatible (sold separately). Capacity: 6L + 500ml QUICK STOW™ flasks x2 included Size: L 36.0 × W 23.0 × D 11.0 (cm) Weight: 160g Suitable chest size: S 71 - 86cm, M 81 - 101cm, L 96 - 116cm Main body material: N70D durable water-repellent honeycomb nylon Straps: 3D ventilation mesh