Kangaroo Brands Original 3/4" Anti Fatigue Comfort Standing Mat Kitchen Rug, Phthalate Free, Non-Toxic, Waterproof, Ergonomically Engineered Floor Pad, Rugs for Office Stand Up Desk, 32x20 (Black) THE BEST YOU WILL EVER OWN: extra thick 3/4" ergonomically engineered, features highest-grade foam to eliminate pressure and provide superior support over long periods of time. SAFE: Non-toxic, phthalate free, Prop 65 compliant. Textured surface and advanced beveled edge design helps prevent slipping and tripping. Foam underside helps keep mat in place for minimal adjustments. DURABLE: Highest quality materials will not break down or compress over time. Strong, durable support for high traffic areas. Easy to clean waterproof material can be vacuumed or wiped with a damp cloth. **Not intended for use with high heels** 10-YEAR GUARANTEE: No questions asked guarantee. We ALWAYS stand by our products and believe the customer is always right. TOP RANKED: Buy today and join the millions of satisfied former foot, knee, joint, leg, and back pain sufferers that are enjoying better posture, muscle conditioning and improved overall health and well being.