rubber tile Item no.:GM0200 Size:500*500*15/20/25/30/40/45mm Weight:9.4kg/pc Material:surface is 1mm rubber grains and bottom is 2-4mm rubber grains Feature:shock-absorbing,waterproof.colorful,nonpoisonous,elastic,anti-slip,anti-UV The installment is very easy and only a little adhesive can be ok to fix rubber tiles on the floor. Common use:kindergarten,playground,park,home yard,hospital.gymnasium and other training public places.