Burt's Bees BabyBaby Girls' Organic Cotton Zip-Front Non-Slip Footed Sleeper Pajamas

In comparison to Carter’s, are these more like their snug fit or loose fit?

What are the "bee grips" made out of?

Why are the arms so tight? I have purchased burts bees pjs from newborn to 9 months and none have been this tight

Is the fit different from a year or so ago? Want to buy more for second baby, and want to buy the right size so they’ll fit the same as hand me downs