Grotrax 802 Year Round Quick Fix Green Mixture Grass Roll, 50 Square FeetGrotrax provides an easier, cheaper, better way to grow grass. The grass seed and fertilizer are sandwiched between 2 bio fabric layers. Grotrax holds 6X its weight in water. For fast germination and uniform growth, simply roll, water and watch it grow. Highlights: Size: 50 square feet Simply roll, water and watch it grow The patented Bio Fabric prevents seeds from washing away and holds 6x its weight in water, keeping seeds moist for germination Once