Exo Terra's Desert Terrarium Sand is natural real desert sand with no added dyes or chemicals. The sand has been sifted to remove impurities and to obtain a homogenous sand grain size. Natural desert sand, no added dyes or chemicals Creates a natural and attractive desert environment Excellent heat conductor Stimulates natural digging and burrowing behavior Suitable as egg-laying substrate    Desert SandPT3101Desert Sand Black4.5 kg10 lbPT3103Desert Sand Yellow4.5 kg10 lbPT3105Desert Sand Red4.5 kg10 lb