Functionl: This breeding box designed specifically for silkworm, as an observation box and a growth chamber Transparent Design: The silkworm observation box is transparent in design, making it easy to observe the growth of the silkworm Spacious: This silkworm growth container features with indepent chamber that provides ample space for the silkworm to grow Easy to Carry: The silkworm hatching box with air hole handle at the top is easy to transport and carry, suitablefor any outdoor adventure Size Chart:20cmx21cmx17cm/7.87inchx8.27inchx6.69inch. Color:As Shown Material:plastic Package Contents: 1 * Silkworm Breeding Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.