Reptile One Ultra Fine Sand is the ideal substrate for landscaping your vivarium! The ultra fine sand has a silky smooth texture that is free from toxins and other impurities that can harm reptiles. This substrate also allows reptiles to mimic their natural digging behaviour, and when damp, provides ideal conditions for a laying site. Specifications: Available in 3 sizes 46258 - Ultra Fine Reptile Sand Dune 5kg 46259 - Ultra Fine Reptile Sand Dune 10kg 46260 - Ultra Fine Reptile Sand Dune 15kg