Engel 70% Organic Wool 30% Silk Baby Shirt Long Sleeve 70% Organic Merino Virgin Wool and 30% Organic Silk Made from unique blend of Merino wool and silk will keep baby warm in cooler weather. extremely warm and comfortable The shirt features an envelope style neck so you can pull it easily over your baby's head. Certified by GOTS (Global Organic Textile Standard). Used Dyes are free from formaldehyde, azo dyes, dioxin, and heavy metals. Made in Germany.