Size Guide - FamJams All Sizes

Size Guide - FamJams All Sizes

Baby (Preemie - 24 Months)

Size Weight Height
Preemie up to 6 lbs / 2.7 kg up to 17" / 43 cm
Newborn 6-9 lbs / 2.7-4.1 kg up to 21.5" / 55 cm
0-3 months (3M) 9-12.5 lbs / 4.1 - 5.7 kg 21.5" - 24"/ 55 - 61 cm
3-6 months (6M) 12.5 - 17 lbs / 5.7 - 7.7 kg 24" - 26.5"/ 61 - 67 cm
6-9 months (9M) 17 - 21 lbs / 7.7 - 9.5 kg up to 28.5" / 72 cm
12 months 21 to 25 lbs / 9.5 -11.3 kg 28.5" to 30.5"/ 72 to 78 cm
18 months 25- 28 lbs / 11.3 - 12.7 kg 30.5" to 32.5" / 78 - 83 cm
24 months 28 - 30 lbs / 12.7 - 13.6 kg 32.5" to 34" / 83 - 86 cm


Toddler (2T-5T)

Size Weight Height
2 Toddler (2T) 29 - 31 lbs 35" to 36.5"
3 Toddler (3T) 31 - 33 lbs 36.5" to 39"
4 Toddler (4T) 34 - 37.5 lbs 39" to 41.5"
5 Toddler (5T) 37.5 - 42 lbs 41.5" to 44"


Big Kid (6Y-12Y)

Size Weight Height
6 Years (6Y) 38.5 - 48 lbs 42.5" to 47.5"
8 Years (8Y) 59.5 - 69.5 lbs 50.5" to 53.5"
10 Years (10Y) 69.5 - 87 lbs 54" to 56"
12 Years (12Y) 87 - 101 lbs 58" to 60"


Adult Women's 

Size Chest Waist Hip Inseam
X Small (XS) 32" - 34" 26" - 27" 34.5" - 35.5" 29"
Small (SM) 35" - 36" 28" - 29" 37" - 38.5" 30"
Medium (MD) 37" - 38" 30" - 31" 39" - 40.5" 31"
Large (LG) 39" - 40" 32" - 34" 42" - 43.5" 31.5"
X Large (XL) 41" - 45" 35" - 38" 45" - 47" 31.5"
XX Large (XXL) 46" - 48" 39" - 41" 47.5" - 49" 31.5"


Adult Men's 

Size Chest Waist Hip Inseam
X Small (XS) 34" 26" 35" - 36" 29"
Small (SM) 40" 28" 37" - 38" 30"
Medium (MD) 42" 31" 39" - 40.5" 31"
Large (LG) 44" 35" 42" - 44" 31.5"
X Large (XL) 46" 39" 45.5" - 47.5" 32"
XX Large (XXL) 48" 43" 49" - 51" 32.5"