Because we want children to have the best start in life and you as parents to be successful in the early bonding with your infant, we feel it important to offer only top-of-the-line slings. We import only high quality wrap-around slings from Europe. The Oeko test is a symbol of environmental friendlinss and quality. This seal is found on quality products in Germany. The Oeko symbol is administered by an independant consumer reporting group that tests consumer products for eco-approval and quality. With baby slings they also use the functionality guidelines established by Dr. Kirkilionis, a German PHD who does research on Baby Wearing. Here are slings that have the Oeko Test approval. Products we use and love. Choosing a correct baby carrier, will insure your success in baby wearing! Sling sizing chart