Practical 2-Piece Set: This set includes 2 pieces, each 16.5cm in diameter. The planters are lightweight and easy to handle. The dimensions of the indoor and outdoor planters are suitable for almost all small to medium-sized houseplants, as well as herb and spice gardens. The planters are ideal for orchids, cacti, succulents, aloe vera, basil, flowers, peace lilies, air plants, and snake plants. Easy Drainage Holes Movable Tray: Excess water drains through the two drainage holes to prevent overwatering and flooding. The trays collect overflowing water for easy cleaning. It is recommended to place a layer of filler material at the bottom of the flower pot. Eco-Friendly Material: Made of durable recyclable plastic, the sturdy plastic pots protect plants and soil. The high-quality polypropylene pots are sturdy but not too heavy. The 2-3 mm thick side walls keep everything in place.