The first re-flexion tile developed in the world and has been nationally patented. 300 x 300 Ceramic tiles that use to massage the sole of your feet when you step on it. Has many kind of patterns with 5 big, 8 medium, and 8 small bulges. Designed very well to touch the re-flexion point on your feet's sole; give the comfort and benefits of using it. It can be use for indoor and outdoor. Super class for Indoor/portable use contain of 2 pieces in a box. could be placed anywhere you want. included sponge carpet to be placed below of the tiles. Premium class for exterior use contain of 6 pieces in a box. BIIb class with 6-10% water absorption. thickness 26mm