SM SunniMix Portable Bite Valve Cover for Cycling & Biking - Waterproof Dustproof Protection for Hydration Packs, CamelBaks & Sports Bottles - Ideal for Outdoor Adventures, Hiking, Camping & Fitness Activities

Description: - Plastic Bite Valve Cover, durable and safe. - Keep bite valve clean and dirt free. - Suitable for nozzles with diameter about 18-19mm and length about 30-31mm. - Fits most hydration pack. - Outdoor camping hiking biking hydration packs replacement parts.Specification: - Material: Plastic - Color: BlackSize Chart:Inner diameter: 20mm/0.79inchOutside length: 31mm/1.22inchPackage Includes:1 Piece Hydration Pack Bite Valve CoverNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!