They are made of quality plastic that offer durable use without crumbling; Wide lip on the of containers, easy to grab, lift and transport. These plastic net cups promote a plant growth through aeration. Slotted design let the roots grow their own way, right down through the pot and out of the sides, allow for bigger, healthier roots. Features - ColorTransparent - Material: Plastic. - Size: 6.8x5x5cm. - Promote a plant growth through aeration. - Smaller diameter at the bottom for easier removal of netpot with attached roots. - Wide lip on the of containers, easy to grab, lift and transport. - There are many holes in the bottom, which produce healthy roots with even drainage. - Made of durable, UV resistant plastic, suitable for Hydroponics/Aquaponics/Orchids. - Warm Tip: Dear buyer, due to lighting effect, monitor’s brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 20 Pots for Hydroponics