Hanna Andersson changed the fit of their famous organic cotton long johns in 2007 in order to meet US regulations that stipulate children’s pajamas must either meet flame-resistant standards or be snug-fitting. The Fall 2007 catalog introduced “new! snug-as-a-hug sleepwear”. It’s pretty easy to tell if your long johns/short johns are the older, looser fit, or the newer, snug fit. Just check the tag! The tag on your pajama top will state “WEAR SNUG-FITTING NOT FLAME RESISTANT” if it is the new snug fit.

The snug-fit tag looks like this.

Looser PJ tags do not mention snug-fit or flame resistance.