20mm Sprung Rubber Heavy Duty Gym Tile
Excellent Product. Very sturdy and looks great down. Time will tell on durability but looks like it has a fair few years in it. They're heavy enough to lay without adhesive so I've initially elected to rely on the sheer weight to avoid movement. If you are opting for the 20mm then make sure you have a quality Stanley knife. These mats are thick and while it's not difficult to make the first few scores getting through to the bottom takes patience. Worth it though!