Sturdy and Durable: The coil spring is made of non-toxic plastic. Thick spring toys are more elastic and durable, allowing your to play with .VIBRANT COLORS -- Bright colors are more attractive to kittens. plastic springs consist of 4 classic colors, yellow, green, red and blue, to suit your 's preferences.Release the 's : Irregular movements and sudden bouncing springs stimulate the 's hunting instinct, let the , bounce, and jump, so that the will no be lazy and love to move!Interactive Toys: You can throw these spring toys on the ground to play with your to enhance interaction, encourage activity and exercise to increase energy and keep healthy.Elastic: These spring toys are lightweight and super elastic! These coils are thickened for more elasticity and durability.Colour:Green+blue+ red+yellowMaterial:plasticSize:Length: about 5.5cmDiameter: 2cmPackage Contents:120 X spring jumping toy