Features of The Kids Watch Bands Skin Friendly Braided Nylon Bands Double layer made to ensure it's durable, and stays skin-friendly at the same time. Loop&Hook Design Just pull and stick, flexible with sizes - much better than traditional watch bands style. Soft and Comfortable It's soft and lightweight - wearing all day through study or sports. Questions & Answers 1. Do I need tools to install those bands? NO, the bands come with release pins installed, just follow the instructions printed on bags to install. It's easy and fast. If you found pins lost, please reach us for help. 2. Are those kids bands washable? Yes. Just like normal clothes, they are easy to clean and dry. 3. What's the width of those bands? The width of the bands and lugs are 20mm, which works with the Gizmo/SyncUP/Gabb watch, and also other watches using 20mm lugs. Please be aware that the length of bands are made for kids small wrists.