Merino Collection from Kas Rugs. Walking into a room has never felt better. sink your toes into 3 inches of plush, densely woven fibers. The patterns and colors in this collection are as soft as the fibers, making you and your guests feel relaxed and at ease. Enjoy the comfort and serenity Merino has to offer. Merino is an irresistible collection that is machine woven of polypropylene in Turkey.