For building snow forts out of super-powder snow, Patagonia'sBaby Snow Pile Bibs can take on extreme wintry conditions. The layerable snow pants' durable 2-layer 100% recycled nylon, H2No Performance Standard shell with a waterproof/breathable barrier has fully taped seams, polyester plain-weave lining fabric and a DWR (durable water repellent) finish to seal out cold and snow. The 100-g Thermogreen insulation (92% recycled) stays warm even when wet, while the deep center-front zipper with snap closure and internal/external wind flap further shuns the elements. Baby-friendly features abound: low-profile adjustment in straps for the perfect fit; elasticized waist in back to lessen bulk and improve movement; articulated knees; stash pocket with internal pass ring on right thigh and reflective webbing pull; durable nylon scuff guard; internal gaiter with gripper elastic; loop inside hem to add cord and keep pant legs from riding up; grow-fit feature adds two inches in leg for extended wear; reflective logo; hand-me-down ID label.