Security wristbands, made with DuPont™ Tyvek, are an economical solution to visitor and crowd control. The single-use, waterproof wristbands are great for parties, events, field trips or tagging inventory and supplies. Bands are sequentially numbered (choice of starting number not available). To use, peel-off adhesive liner, wrap around wrist and adhere to other side of wristband. 3/4" wide x 10" long. Yellow. Each pack includes 100 wristbands. Sold as 2 packs for a total of 200 wristbands.