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 - Color: White. - Material: Plastic. - Size: 3.50X3.40X1.70cm/1.38X1.34X0.67in - 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. Package list: Net Baskets