Eco-friendly and safe to your health: Pass the Test of Phthalates 6P, free BFA and free volatile toxins; No cadmium, no tin and no lead Protects carpet from scratches, scuffs and dirt from footwear and damage caused by chair casters; Suitable for using on low pile carpet with thickness up to 1/4'; Perfect for home and office use Studded back for strong gripping without piercing or damaging your carpet; Non-slip matte surface provides added ease of movement, easy to glide and can reduce leg fatigue