Key benefits Converts most water bottles into a convenient hydration system for outdoor activities and workouts. Hands hydration with a maneuverable hose for easy access while moving. Easy installation: attach to bottle mouth by removing the lid and screwing on for 28mm or 30mm diameter mouths. Safe drinking experience: foodgrade silicone suction nozzle, inner tube made of foodgrade PE, outer layer of sturdy foodgrade TPU. Clamp fixing design: secure to your backpack for onthego hydration without removing the bottle. Compatibility and materials Bottle mouth compatibility: 28mm or 30mm diameter Fits most standard water bottles Materials: foodgrade silicone suction nozzle; inner PE tube; outer TPU Performance and use Reliable hydration access during activities without adding bulk Simple, quick setup and secure attachment to your backpack with the clamp fixing design Usage scenarios Hiking and trail running: keep the bottle attached to your pack for easy, onthego sipping without stopping. Cycling and commuting: clamp onto your backpack or kit and drink without taking hands off the handlebars. Gym, travel, and daily activities: convert a regular bottle into a readytouse hydration system for convenient access anywhere.