Seashells doormats Fashionable Design Seashells at The Sandy Beach,Colorful, Indoor/Outdoor Floor Mat 23.6"(L) x 15.7"(W) Size: 23.6"(L) x 15.7"(W), 3/16" thickness Durable heat-resistant non-woven fabric top Backed with a neoprene rubber non-slip backing Machine-washable Indoor and outdoor use.