Features: Craft from durability plastic, this valves offer great water proof and breathable performances, and is easy to install on various board types. Ensures your surfboard safety with our automatic breathable vent valves, designs to regulate air pressure and prevent damage from pressure changes. Suitable for a wide ranges of marine environment, whether you being on tropical seabeach or in cold water, this valves effectively protects your surfboard. Enhances your water sport experience with this essential accessory, ensuring your equipment remain in top condition across different surfing adventure. Great for almost surfing enthusiasts, especially those who frequently surfing in diverse sea conditions or climates. Specifications: Materials: Plastic Color: As The Picture Shows Package Weight: approx.22g Size: approx.2.5x1.8cm/0.98x0.70in Package Includes: 1Pc Surfboard Auto Valves note: Please allow 1-2cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!