Ongrok Carbon-lined Wallets with Combination Lock V 2.0 | 3" Sizes (Small, Medium, Large)ACTIVATED BAMBOO CARBON HELPS TRAP ODORS IN Activated Bamboo Carbon is the best material for absorbing odors. It has a better performance compared to other smell absorbing fabrics and is gentler on sensitive skin. STORAGE POCKETS FOR BETTER ORGANIZATION The small carbon lined pouch has various compartments such as a mesh pocket with flexible webbing, while the medium large pouch version has 3 color coded pockets in addition to the elastic webbing.