This is a set of transparent plastic insect breeding cases with lids. There are three sizes: large, medium, and small. There are two medium-sized cases, making a total of four. 【Sizes】 (Approximate) Large: 40cm wide x 32cm high x 24cm deep Medium: 30cm wide x 20cm high x 18cm deep Small: 23cm wide x 17cm high x 14cm deep They are still usable, but they are old. Please consider this before purchasing. Thank you for looking.