SAMPLE 6 inch x 6 inch (Unbound) Belgian Wool - WEAVERS GUILD SAMPLES ( 6 inch x 6 inch ) are RECOMMENDED but not required for any purchase to show you the exact color, quality and thickness of the carpet. THEY DRASTICALLY HELP ELIMINATE RETURNS. **Our policy does state that the Buyer is responsible for all return shipping costs. Two standard sizes, custom cutting also available. All Stair Treads come with Premium fabric bound edges to prevent fraying. Wool Inspiration is made of 100% BCF Olefin with th look and softness of wool and combined to the strength of polypropylene. PERMAShield Advanced Stain Protection. PET Friendly "MAGIC FRESH" Odor Neutralizer - Helping to eliminate pet and many common household Odors.