o'neill kids snow pants with a high percentage of recycled polyester . the o'neill hammer pants are made from 50 % recycled materials with technical stretch for improved freedom of movement. the 10k/10k waterproofing and breathability work seamlessly with critically taped seams and a pfc-free, durable water repellent coating to keep you dry and warm if the weather turns. an adjustable waistband with press stud fastening and a jacket-pants connection system offer comfort and waist adjustment.