These are NOT maternity snow pants, but I made them work for that purpose. They are great non-maternity snow / ski pants. Slightly insulated with back support, elastic strapped with plastic clip clasps, and actually waterproof made these awesome snow/ski pants through two pregnancies. I downhill skied in them up until 36 weeks and wore them around town in a snowy climate until 38 weeks and was both dry and toasty warm.