Come and see our amazing products. Squeeze as hard as you can and boost your mood and energy. This stress ball can not only help you vent bad emotions, but also help you practice your hand or fingers strengthener, or grip trainer too. Especially the piano player, guitarist, keyboard player, office worker and people who often work by hands. These balls are durable and made from 100% polyurethane so you can squeeze as hard as you can to relieve your stress. Stress balls is a good decompression toy for everyone like kids, teens, adults. It 's helpful for relief your mood and enhance hand strength. Three balls is enough, you can stay it in your office, home and car. My price includes shipping cost to ca. Over 5000 pcs by sea. Customize it with your logo or company name on the and become your next promotional event! Pls confirm with us about the packing info, stock color and exact production time before placing your order.