The Handy Pantry Micro-Mat Minis Hydroponic Grow Pads are 4" x 4" in size, perfect for starting plants and seeds in a hydroponic system. The yellow color of the pads provides a bright and vibrant look for your garden or indoor hydroponic setup. With a quantity of 48 pads included, you have plenty to use for multiple plantings. These grow pads are ideal for small-scale hydroponic enthusiasts looking to expand their collection of grow pots and seed starting trays.