Cleartex Megamat extra heavy-duty polycarbonate chair mats designed for users up to 500 lbs. Perfect for use with Big & Tall\/24-hour chairs. The ultimate in quality and durability in floor protection and ergonomics. These high clarity chairmats are made from Floortex Original polycarbonate which has double the impact strength of PVC and will not crack, curl, discolor or smell. High gauge ideally suited for use on home or office hard floors or any pile of carpeted flooring. The perfectly flat and hard surface provides easy glide movement of caster-based chairs which can reduce leg fatigue and lower back strain. Megamat is free from Phthalates, PVC and toxic chemicals. An ideal choice for people with allergies. Manufacturing with 50% of our manufacturing site's energy coming from on-site and external renewable sources. 100% recyclable. Our polycarbonate mats are delivered flat for immediate use.