Product Description Our 1" Tyvek® wristbands are made from synthetic paper called DuPont™ Tyvek®. It is water resistant and comfortable to wear making it perfect for short term wear. Each Tyvek® wristband is consecutively numbered for extra security. The backside of the Tyvek® wristband is white, not the front color. Product Details Short term use: approximately 1-2 days Sequentially numbered for accountability Waterproof, adjustable adhesive 500 wristbands per pack Separate packs may contain different number series 100% code two, recyclable material Secure, tamper resistant, die cut adhesive tab Strong, durable, and comfortable Upholds writing with permanent and sharpie marker Custom imprint available Made in the U.S.A.