Premium Wool Carpet Stair Treads - Set of 15 by Dean Flooring Company. Made from all natural 100% premium New Zealand Wool (the choice natural fiber for textural opulence and lasting beauty). Luxury Carpet. Premium Quality Broadloom is Woven Face-to-Face on State-of-the-Art Wilton Looms. Edges are finished with color matching yarn. Helps prevent slips on your hardwood stairs. Easy DIY installation with double-sided carpet tape (not-included). Each tread measures approximately 27" x 9".