Squeeze it, squash it, smash it down – every squish makes a crackling sound! This set includes four neon colors (purple, green, blue, orange) of soft, stretchable sculpting Playfoam Putty that crackles when you squeeze it for the ultimate multi-sensory experience. Squishing, shaping and squeezing Playfoam Putty is ideal for hand strength and other fine motor skills, and the bead-like texture and crackling sound are ideal for sensory play. Safety Warning: WARNING! Possible colour transfer, may stick and transfer colour to fabric, wood, or carpet.