The use of Activated Bamboo Carbon in our Carbon-lined Wallets with Combination Lock V 2.0 | 3" Sizes (Small, Medium, Large) is supported by scientific evidence, making it the most efficient material for absorbing odors. It surpasses other odor-absorbing fabrics and is gentle on delicate skin. Keeping your items organized is made easier with the storage pockets. The small pouch includes a mesh pocket with flexible webbing, while the medium and large versions have 3 color-coded pockets and elastic webbing. To add an extra layer of protection, these wallets feature a combination lock to secure your belongings. Onrok only uses high-quality materials, such as waterproof 1000D Poly Fabric for the exterior of the Ongrok storage bags. Our premium waterproof zipper also comes with a lifetime guarantee.