The Shuttle 6L Hydration Backpack is designed for trail riding and mountain biking. It includes a 2L Hydrapak reservoir with a Phaser bite valve for hands-free hydration. The breathable air mesh back panel and shoulder straps enhance airflow. A fleece-lined pocket protects sunglasses or a phone from scratches. An internal pump sleeve organizes tools and essentials. It features an adjustable sternum strap with an integrated rescue whistle for safety.