Comes with 4 bite valve silicone sleeves, each containing an inner post. Bite Valve Replacement Sleeves: Use these bite valves to replace old and leaking bite valves on your water bag; it fits most brands and types of water bags, for Osprey Packs Hydraulics water bag compatible. Premium Silicone: Made of high-quality silicone, with good durability and elasticity, odorless and free of harmful substances, providing you with a soft bite, allowing you to sip easily and drink healthily. Wide Application: Fits most brands of water bags and water bags of different capacities; it is a good replacement for bite valves whether you are cycling, running, hiking or other outdoor adventures. Colour: parent-Red Material:Silica gel Package Contents: 1 set * Soft water bottle spout Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store