[ Premium Sponge Core (Ergonomic Support) ] Built for Long-Lasting Comfort – Rhino’s closed-cell polymeric sponge base maintains lift, rebound, and cushioning over time, unlike mats that flatten or harden. Designed from the inside out for true long-term ergonomic relief. [ Long-Term Durability ] Made for Demanding Workspaces – Engineered to withstand years of heavy use, the closed-cell sponge retains its structure while the fused surface layer resists wear, moisture, oils, and many common industrial chemicals. [ Industrial-Grade Construction ] Rugged, Stable, and Reliable – Resistant to weather and ozone with no degradation from exposure. Self-extinguishing when tested to FMVSS-302 standards and performs in a wide temperature range from –40°C to 108°C. The surface is permanently fused to a PVC, NBR, and chloroprene closed-cell sponge for strength and stability. [ Beveled Safety Edges + Material Benefits ] Designed for Workplace Safety – Molded beveled edges taper within 1.5" to help reduce trips and create a secure perimeter seal. The sponge skin layer blocks moisture and stands up to most oils and common industrial chemicals. Excellent for manufacturing, workshops, assembly areas, and workstations. [ Free Bonus Knee Pad ] Included Comfort Pad – Every order comes with a 16” x 18” x 0.75” polyurethane knee pad (a $30 value), perfect for tasks such as gardening, construction, auto projects, flooring, home improvement, and painting. The American Classic Diamond Plate Anti-Fatigue Mat by Rhino delivers durable, long-lasting support for demanding work environments with a ribbed, high-traction surface, closed-cell foam comfort backing, resistance to weather, ozone, and many industrial chemicals, FMVSS-302 self-extinguishing performance, easy-to-clean maintenance, and beveled edges that help reduce tripping hazards.