This set includes 12 clear stretchable ball skins made from high-quality TPR material and 15 durable zip ties for secure sealing. The transparent design allows you to see the contents inside, making them ideal for DIY squishy stress balls or sensory crafts. TPR (Thermoplastic Rubber) offers excellent elasticity, softness, and durability, allowing the balls to be squeezed and stretched repeatedly without deformation.

Each ball skin features a small fillable opening, allowing easy insertion of beads, slime, or other sensory fillers. The included zip ties help ensure a tight seal, preventing leaks during play.

Whether used for creative projects, classroom activities, or everyday fidget fun, these refillable ball skins provide a versatile base for endless play. The included zip ties offer a simple way to seal and secure the filling of your choice.