It is made of steel metal and eco-friendly soft silicone material, rainbow of colors slap bracelet is durable and fashionable. Easy and fun to wear, just simply slap on your wrist and it fits well. Great party favors for kids' and adults birthday parties or other gathering occasions. Wrist, ankle and arm size are available. PMS color is available. 9 1/2" L x 1 1/5" W