My son is two and just starting to potty train. All we had for underwear as a couple pair of Haens 4T Thomas briefs that we got from somebody as a gift. So I ordered these in the 2T/3T size. I like the design and the price. My son is a little on the small size so I thought these might be a little big, but had to be better than the 4T pairs. NOPE. these are actually larger than the Hanes 4T pairs. They are absolutely huge!! I think they'd probably fit my 1st grade daughter. The fabric is fairly rough too.  The design is pretty nice, but the rough fabric and huge size makes these a no go.