These baby dishes are made of silicone, so they stick to the table and are less likely to move around! Please note that they may not stick depending on the table, surface, or shape. The two larger crab and brown plates have been used a few times and are in excellent condition (*^^*) The green and pink plates were used for about three months, so they show some wear, but are still usable (*^^*) Please check the back of the dishes for microwave compatibility before use!! This is a set of four＼(^^)／