the plastic planter to store water and the cotton string absorb water to the soil for the plant High-End Planters for Indoor Plants Material: The 20 cm self watering pot is made of 4mm thick high quality plastic, which is sturdy, durable, and not easy to get deformed or broken. Appearance: Based on modern aesthetics, the seeding planter has a matte finish, with the contrast between white and brown, it’s a gorgeous and unique piece of art.Package Contents: White Plastic Self Watering Planter x 2 ( Diameter x Height: 20cm x 19cm); Matching Brown Tray x 2; Cotton Rope x 2; Watering Lip x 2. Maximum capacity 960 Grams not given plastic