The owner of Calvin Klein and Tommy Hilfiger brands, PVH Corp, has been awarded Oeko-Tex Standard 100 certification for its men's dress shirts.

The certification indicates that the dress shirts do not contain harmful levels of more than 100 substances believed to be dangerous for humans.

In addition, the Oeko-Tex certification establishes a uniform, objective quality standard that is recognised and easily implemented across PVH's worldwide supply chain, the company said.

"Oeko-Tex certification sets a reliable, uniform specification that all our suppliers can attain, no matter where in the world they manufacture," said president of the dress shirt & underwear group at PVH, Mitchell Lechner.

"That means we provide safe, consistently high quality dress shirts that meet or exceed all governmental regulations, our internal standards, and our customers' expectations," Lechner added.

PVH encourages its suppliers to maintain Oeko-Tex certification on dress shirt components they sell to PVH, the company said.

"PVH is the major dress shirt manufacturer in the market," said Sam Moore, who represents Oeko-Tex in North America. "Their certification will have a very positive impact on the product safety and sustainability of the world's textile supply chain including the retail apparel market."