We at Nordic Natural Woollens believe that only the purest of fibres should touch the skin of babies, children and adults and that is why we are fully committed to providing as many garments as possible that have passed the Oeko-Tex 100 Standard for product and environmental safety. From buttons to zippers to snaps, our products have been thoroughly tested and have passed the most stringent environmental safety standards, keeping allergy-inducing chemicals and dyes away from our customers and growing bodies safe from harm. To read more about the Oeko-Tex 100 standard please visit their website at www.oeko-tex.com. You can also read about this certification standard through Wikepedia at www.en.wikipedia.org/wiki/Oeko-tex_standard.