With its built-in extendable and contractible reel, this ID card holder can be used to pass through smart card office entry and exit systems or railway ticket gates with ease and confidence. The unobtrusive, slim strap and all the design functions of the case allow the full and free expression of working people on the go. You can express yourself and enjoy staying fashionable, even at work. Thanks to the positive image and simple design format, this is a product that achieves all of the above.