The Mercer M36006 BLU Towelis made of 100% non-woven cotton and is highly absorbent, durable and can clean a variety of surfaces. It's the versatile, eco-friendly and cost effective way to sanitize. The compact puck shape saves storage space. The BLU towel measures at 1-3/4 inch in diameter by 3/8 inch when dehydrated and 9-1/2 inch by 23-1/2 inch when hydrated.