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 and types of water bags, for 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 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:Transparent-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: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!