This pale white self-hardening clay is formulated for handbuilding, wheel-throwing and sculpture techniques. Stonex is moist and ready to use; simply knead it to increase plasticity before modeling. The pieces dry hard and durable, but not waterproof. Can be painted.Details:White25 lb. box weight6 boxesModeled objects are permanent without firingPremium qualityNontoxicCan be painted, but not waterproof