PURE COPPER - the exterior is made of pure copper, which is weather resistant and built to last. STAINLESS STEEL MESH - the durable mesh is made of stainless steel with a matte black finish. EASY TO FILL - simply open the door and fill with seed. EASY TO HANG - can be easily hung to any shepards hook or tree using the copper loop. PATENTED FLY-THRU DESIGN - provides you with clear access from all angles to see your feathered friends feed.