Good permeability: these net cups are designed with slotted mesh, can promote a more efficient plant growth through aeration Growing by its own way: net pot with holes in the bottom, produce healthy roots with even drainage, which let the roots grow their own way, right down through the pot or out of the sides, allow for bigger, healthier roots Comfortably sized lip along the top makes the hydroponic cups easy to grab, lift and transport. The slits allow for bigger, healthier roots and make the baskets easier to clean. Wide range of applications: the orchids hydroponic containers casket can be applied for aquaponic and hydroponic gardening of orchids, tomato, peppers and more, suitable for family garden, balcony garden, soilless cultivation, liquid culture and organic cultivation Designed for hydroponic plant: the wide lip round net pot can wok with various kinds of soil based and hydroponic media, such as expanded clay pebbles, lava rocks, pumice, rock wool, etc., roots will easily find their way through slits on the sides and bottom of cup Colour:Black Material:Plastic Size:Upper mouth: Outer Diameter 45mm; Inner Diameter 31.5mm Height: 45mm Package Contents: 400 x Garden net pots Only the above package content, other products are not included. Note: Light 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.