Heavy-Duty Construction & Secure Grip: Crafted with ultra-durable, 0.2" x 0.2" lip, Labeta 36" x 48" chair mat for carpet resists bending, cracking, and curling. Chair mat with lip for carpet underside locks securely onto low-pile and woven carpets, preventing slips while ensuring smooth chair movement. Optimized for Low-Pile Carpets Only: Labeta office chair mat designed exclusively for low-pile (up to 1/4") and tightly woven carpets. Not suitable for hard floors, high-pile rugs, or uneven surfaces ensures maximum grip and safety for your specific flooring type. Office chair mat for carpet is rolled up for shipping stability. Unroll it, lay it flat on your carpet, and follow the instructions to ensure proper leveling.