K135 Size: 1" x 1" Features: -31 numbered carpet squares, with four extra squares for special days.-Lifetime Anti-Microbial Protection.-Double-stitched serged edges.-Carpet stain protection.-Lifetime Anti-Static fiber.-Assists in allergen particle control.-Meets NFPA 253, Class I Firecode requirements.-"Kidply" backing helps prevent wrinkling and creasing. Construction: -Polypropylene construction. Dimensions: -Dimensions: 12" x 12". Warranty: -Lifetime Abrasive Wear Warranty.