This wine rack is constructed with 3 individual stackable wire racks. Free-standing wave-shaped racks fit any space, you can stack each tier vertically or detach and place side by side for versatility and even stack additional layers for extra capacity. Each tier is designed to hold 4 bottles of wine. It is made of premium grade durable metal wire which can withstand the total loading of 12 bottles of wine. The sturdy structure prevents wobbling, tilting, or falling.