Diving material is a kind of synthetic rubber foam. It has the characteristics of fine, soft, elastic, shockproof, heat-preserving, elastic, impermeable and airtight. This lens bag is made of high-grade neoprene, which is more convenient to carry than a rigid lens barrel, and saves space in a suitcase or other bag A hook is standard and a belt can be worn, which is convenient for hanging other bags or wearing a belt, and it is convenient to change the lens.4-in-1 Waterproof, Anti-Shock, Anti-Cold, Anti-Dirt Lens Pouch.This model is a universal lens bag, no matter what brand of lens, as long as the size is the same, it can be installed. However, accessories such as -diameter hoods and lens holders cannot be installed.Belt Loop: For convenient carryingHook: Allows you attach the pouch to anywhere with a ring (such as camera bags and backpacks).4 Different Sizes: S/M/L/XL can be used for all camera lens. Suitable for most of standard for , , , , , , lens etc.Small size (S): 8cm in diameter and 10cm in length. The length that can be installed does not 7cm and the diameter does not 8cm.Medium (M): 9.5cm in diameter and 14cm in length. The length that can be installed does not 11cm and the diameter does not 9cm size (L): 10cm in diameter and 18cm in length. The length that can be installed does not 15cm and the diameter does not 10cmExtra (XL): 10cm in diameter and 24cm in length. The length that can be installed does not 22cm and the diameter does not 10cmColour: blackMaterial: NeoprenePackage Contents:1 * small lens bag1 * medium lens bag1 * lens bag1 * extra size lens bag