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, large accessories such as large-diameter hoods and lens holders cannot be installed. Belt Loop: For convenient carrying Hook: 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 almost all camera lens. Suitable for most of standard for Canon, Nikon, Pentax, Sony, Minolta, SIGMA, Olympus lens etc. Small size (S): 8cm in diameter and 10cm in length. The total length that can be installed does not exceed 7cm and the diameter does not exceed 8cm. Medium (M): 9.5cm in diameter and 14cm in length. The total length that can be installed does not exceed 11cm and the diameter does not exceed 9cm Large size (L): 10cm in diameter and 18cm in length. The total length that can be installed does not exceed 15cm and the diameter does not exceed 10cm Extra Large (XL): 10cm in diameter and 24cm in length. The total length that can be installed does not exceed 22cm and the diameter does not exceed 10cm Colour: black Material: Neoprene Package Contents: 1 * small lens bag 1 * medium lens bag 1 * large lens bag 1 * extra size lens bag