Spans 4 to 7, dropping diaper room and adding zips, buttons and adjustable waists.
Measurement
4-7 (girls 4-6X)
The basics
What to know about little kids
Little kid's sizing covers roughly 4 through 7, listed as boys 4-7 and girls 4-6X. The 6X is an extra step sitting just above a 6 and just under a 7. Diaper allowance disappears here and real garment construction arrives: fly fronts, buttons, back pockets, separate waistbands and zips. Clothes in this band are small versions of adult clothes rather than baby clothes made bigger.
Height drives the chart across this stretch. Children gain about 2 to 2.5 inches a year between four and seven, and legs lengthen faster than waists thicken, so the two measurements stop moving together. Adjustable inner waistbands, meaning a strip of elastic with buttonholes hidden inside the waistband, are the detail that keeps a pair of pants wearable through that gap. Without one, pants bought long enough to last sit loose at the waist and slide.
Longevity against fit is the trade here. Going up a size buys a few months. It costs a dragging hem, cuffs over the hands and a crotch seam at mid thigh. That seam trips a child who is learning to run properly. The US rule applies again. Sleepwear above size 9 months and up to size 14 must either fit snugly or be flame resistant. Pajamas in this band are bought to fit now and never a size ahead.
In photos
Little Kids on real products
See this option on different products. Open a photo for a larger view, or select the name to read its guide.