Whew, is it dry in here or is it just these Cactus Dryer Balls? Just throw these cute cacti in your dryer and let em do their thing. The Cactus Dryer Balls separate wet layers for a quicker, even dry, and fluffy fabric. Use them over and over! Cactus Dryer Balls come in sets of two. Dimensions: 4" x 3.5" x 2.1" Well HOWdy. This laundry room's definitely big enough for the two of us! Cactus Dryer Balls come in sets of two, and are a fun housewarming gift! Keep a set for yourself and use them every time you dry!