The clay not exposed to the air is wrapped in its own sealed bag, which can guarantee perfect shaping ability after at least 1 year.

When you make the finished product, the surface layer will dry in 30 minutes in summer, the basic surface curing in about 3 hours, 2-3 days clay basic shaping success, the final clay out of water will become very light, winter curing time will basically double

  Description: Weight: 50g*1 Quality: Excellent. Packing including:  2pcs tools,50g*1 bag   Features: Eco-friendly material, good for kids' health. Rich colors, develop kids' color sense. Simple operation and suitable for ages 3+. Develop the kids' creativity and imagination. Exercise the kids' coordination ability with hands, eyes and brain.      Note: There is no necessary to put the plasticine into the oven; and it will be dry through placing it in the air for hours. Therefore, the unused Plasticine must be protected under seal, otherwise, it will become dry and hard and can not be used.