4 Inch Square Green Plastic Orchid Pot - 5 Pack Five (5) Pots, 4" x 4" at the top, 3" x 3" at the bottom, 4" high. Made of durable plastic. The plastic is thicker than the tinfoil-like, black plastic 4" pots that are offered by others. Drainage holes on the sides and bottom of the pot allow for better drainage and air circulation around the roots. Slight inward tapering from top to bottom of pot helps direct water flow towards the bottom center.