Cleartex Glaciermat designer chair mats manufactured from incredibly tough tempered glass. Ideal for executive or home office use. Our reinforced glass is tested up to 1000 lbs making it suitable for heavy office chairs or heavier users. Provides elegant, crystal clear floor protection from chair caster damage & general wear. The smooth & perfectly flat surface provides an excellent ergonomic easy glide surface for caster based chairs. Suitable for both hard floor & all pile carpet applications.