Clear plastic containers sized for every stage of an invertebrate colony, from a small isolation container to a wide display bin. Keepers and breeders use them for isopods, springtails, and bioactive cleanup cultures, with low, wide rounds for starter cultures and deeper containers for established colonies. Made from crystal clear, food-grade polystyrene, each one gives a clean view for checking moisture and counts, and the solid walls and secure-fitting lid hold a humidity gradient until you add the ventilation your species needs. Made in the USA and stocked in round and rectangular sizes from 24 oz up to 208 oz.