ROOT AERATION: Promotes "air pruning" to strengthen the root system producing healthier plants NO OVERWATERING: Better moisture control prevents overwatering and drains excess water PROMOTES HEALTHY ROOTS: Allows oxygen in so roots can breathe and develop from all sides, preventing root binding and root rot DURABLE CONSTRUCTION: Top-quality 260g fabric and design with reinforced handles and stake loops PRODUCT SPECIFICATIONS: Comes with (1) 15 gallon square Phat Sack. Measures 15.5" holds 1.95 cubic foot of soil Square Phat Sacks are ideal for eco-conscious growers looking to nurture their plant's root system at an excellent cost. What sets Phat sacks apart from their plastic container counterpart is the high-quality non-woven 260g fabric material. This technology contains roots within the grow container while the breathable fabric allows air to flow through and reach the roots. Oxygen aerates and prunes the roots to create a well-developed root system essential for a healthy plant. Phat Sacks come with a set of handles and stake loops that maintains the pot's square shape.