Sizing Chart Infant AGE / SIZE WEIGHT LENGTH 3 months 12 - 17 lbs 23" - 27" 6 months 17 - 22 lbs 27" - 29" 12 months 22 - 27 lbs 29" - 31" 18 months 27 - 30 lbs 31" - 33" 24 months 30 - 33 lbs 33" - 36" Toddler AGE / SIZE WEIGHT LENGTH 1 year 22 - 27 lbs 29" - 31" 2T 27 - 30 lbs 31" - 33" 3T 30 - 33 lbs 33" - 36" 4T 33 - 36 lbs 36" - 39" Kids AGE / SIZE WEIGHT LENGTH 3 years 33 - 36 lbs 36" - 39" 4 years 36 - 39 lbs 39" - 42" 6 years 39 - 46 lbs 42" - 49" 8 years 46 - 53 lbs 49" - 53" Hat Size SIZE AGE Small under 12 months Medium 12 -24 months Large 2 - 4 years X Large 4 - 6 years XX Large 6 - 8 years Booties SIZE AGE Small 6 - 12 months Medium 12 -18 months Large 18 - 24 months X Large 24 months Mittens