Diving material is a type of synthetic rubber foam with fine, soft, and elastic properties. It offers shockproof, heat-preserving, impermeable, and airtight characteristics. This lens bag is made from high-quality neoprene, providing a lightweight and flexible alternative to rigid lens barrels, making it easier to carry and more space-efficient in luggage or bags. Features include a built-in hook for attaching to camera bags or backpacks and a belt loop for convenient carrying. Designed for easy lens changes and protection during transport. 4-in-1 protection: Waterproof, Anti-Shock, Anti-Cold, and Anti-Dirt. This universal lens pouch fits various lens brands as long as the size matches. Please note that accessories such as lens hoods and holders may not be compatible. Belt Loop: Allows for easy attachment to belts or bags Hook: Enables secure attachment to rings on backpacks or camera cases Available in 4 sizes: - Small (S): 8cm diameter, 10cm length – fits lenses up to 7cm in length and 8cm in diameter - Medium (M): 9.5cm diameter, 14cm length – fits lenses up to 11cm in length and 9cm in diameter - Large (L): 10cm diameter, 18cm length – fits lenses up to 15cm in length and 10cm in diameter - Extra Large (XL): 10cm diameter, 24cm length – fits lenses up to 22cm in length and 10cm in diameter Color: Black Material: Neoprene Package Includes: 1 x Small lens pouch 1 x Medium lens pouch 1 x Large lens pouch 1 x Extra Large lens pouch Note: The package includes only the items listed above. Other accessories are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement tolerance is +/- 1-3cm.