Core warmth for babies. The Baby Down Sweater Vest is made of a wind- and water-resistant polyester ripstop fabric insulated with 600-fill-power goose down. Ultralight, cold-season insulation for serene trail walks with dad or epic stroller wheelies with mom. Patagonia's Down Sweater Vest buffers young bellies in an easy-to-layer construction that combines a 1.4-oz 20-denier polyester mini-ripstop shell with a 2-oz 100% polyester plain weave lining, both treated with a Deluge® DWR (durable water repellent) finish to provide wind- and water-protection. The heat-trapping 600-fill-power premium European goose-down insulation compresses to the size of a PB&J but retains its loft...