Review on Portable Lint Removers, Clothes Shaver Pill Remover: Easily Remove Fluff and Pet Hair from Clothes, Sweaters, Textiles, Furniture (Yellow-2pcs) by Matthew Loesch

Allegedly copper. I'm no expert on metals, but I'm pretty sure it's not copper. And whatever it is, it will chip, crack or corrode upon arrival. I was very happy about it and tried it right away. I have a body pillow that rolls horribly. Using it was like dragging coarse sandpaper across the surface. He somehow caught a few pills, just dragged them along. It did nothing to remove them. He pulled on the surface of the fabric and caused many snags. My daughter still wanted to try it on her pajama top. Since it was only pajamas, I let her. Maybe the pillows were just bad test fabric...? But no, it didn't affect the pills on her shirt, but it got her anyway. Don't buy junk.