SPECIFICATIONSBrand Name: NONEChoice: yesHigh-concerned chemical: NoneMaterial: POLYESTEROrigin: Mainland ChinaTechnology: Adopting a non bouncing harness system with an integrated elastic band that can be deployed with the chest during exercise. This can achieve a consistent and tight fit, allowing you to embark on epic cycling experiences with ample hydration and freedom of movement.Storage and hydration: The main compartment is used for hydration and equipment, with waterproof bags.Features: The high ventilation shoulder strap is ergonomically designed to comfortably and smoothly distribute backpack weight. The ventilation back panel with waveform pads increases the airflow between you and your backpack.Suitable for all outdoor activities: The water bag is specifically developed for mountain biking, road cycling, hiking, running, endurance racing, and all action adventure sports that require a convenient water bag.