This travel watch case has a 'donut' shape & hard shell made by 6mm Ballistic 1680 Denier Nylon, which enables it to be crush&spill-proof and portable. The high-quality YKK zipper keeps it securely closed. The interior of this single watch box lined by black soft plush velvet protects the wristwatch from any scratches. An included soft microfiber polishing cloth can be used to clean & wrap the watch. With one removable 15mm thickness foam insert, the Cheopz watch case holder can fit all small or large wristwatches or smartwatches of men or women, faced up to 50mm, like Rolex, Omega, even jewelry.