crystal soil,water mud,water bead,crystal mud,rainbow clay color : rainbow size:3-4mm high quolity but lower price Products name :crystal soil,water mud,water bead,crystal mud,rainbow clayFeatures: 1) Crystal soil is a new type of green environmental material 2) It's non-toxic, odorless, and clear 3) It can absorb water up to 50-100 times of its original weight, and after expansion it looks very ...