Increase tomato plant yield by up to 40% by reflecting red light onto plant, which stimulates growth! Retain soil moisture and keeps the weeds out. The split tray design enables you to slip the tray around the plant stem without harming it. These trays are also ideal for peppers, cucumbers, melons and other vine crops. Dimensions: 12” x 12” x 3.5”. Package of 3 trays.