Question: what are pyrenex sizes like?
Answer: 0 month. 50cm - 19 11/16 inches. 3,3kg / 7.28 lb. 3 months. 60cm - 23 5/8 inches. 5,5kg / 12.13 lb. 6 months. 67cm - 26 3/8 inches. 7,5kg / 16.53 lb. 9 months. 71cm - 28 inches. 8,5kg / 18.74 lb. 12 months. 74cm - 29 1/10 inches. 9,5kg / 20.94 lb. 18 months. 80cm - 31 1/2 inches. 11kg / 24.25 lb.