The Carefree Dura-Mat is the strongest, most durable mat available. Dirt and water filters through. And they?re hemmed all around. The most rugged and beautiful mat on the market colored vinyl strands and reinforcement fibers are loomed into a woven fabric then compacted and bonded for exceptional strength and durability. Constructed with reinforced brass grommets for staking mat to the ground. Come in their own handy storage bag that can be reused for years. They fold up small for storage.