The Smart Pot® is a soft-sided aeration container that air root prunes your plants. Air root pruning is a key component to a healthy fibrous root ball. Unlike plastic containers, roots do not circle. Instead, air root pruning creates a more fibrous root structure with more root tips. More roots means quicker growth. No circling roots mean better growth. The 3 Gallon Smart Pot is 10"x 8.5".