PUMA Size Chart
  Size Weight (lbs.) Height (in.)
  4 35-39 lbs. 40-42"
  5 39-44 lbs. 42-44"
  6 44-49 lbs. 44-46"
  6x/7 49-54 lbs. 46-48"

Size chart is a general guide. It may include sizes that are unavailable for this item.