These trays are manufactured in the USA. The 1 / 2 inch thick strips of solid birch wood has been steam bent, glued and pegged together to form a continuous surround. The 2 3 / 8 "Strip offers a free product, smooth, clean, and the chip. The floor is a 1 / 2" thick premium grade birch plywood from Finland. After assembly, each tray is made of solid wood with a soft multi-step process of arriving in providing natural surface is smooth.