The RapidBAND™ Classic™ Wristband uses  HID® 125 kHz proximity technology. It will work with most access control systems, and is available in many HID formats.  The RapidBAND™ Classic™ is made of strong silicone rubber.  It can be applied or removed with ease.  It is waterproof and will withstand the rigors of daily use.  Customization and additional colors are available.  Large Size is 8.5" (74mm).  Medium Size is "8" (65mm).  Small Size is "7.5" (54mm).