6/6.5cm Autism Soft TPR Stress Balls Mood Squeeze Funny Gadget Vent Balls Decompression Fidget Toys for Kids Children Adults Stress Relief Feature: Squeezing and pulling help relieve stress and anxiety, promote focus and calm, and help reduce tension. You can grab, squeeze, pinch. At the same time, training the cognitive ability of the baby and promoting parent-child interaction. Specification: Product name: Color-changing vent ball Material: TPR Color: Blue, Rose Red, Yellow, Green Control mode: Force control Inflatable: No Size: 6cm, 6.5cm Type: 60/65mm Blue ball skin, filled with Purple EVA 60/65mm Green ball skin, filled with Blue EVA 60/65mm Yellow ball skin, filled with Red EVA 60/65mm Rose Red ball skin, filled with Blue EVA Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X Decompression Ball