The 5R jeans fit my 5 year old just right. He has always been on the small side though, so kids with big 5 year olds might not fit. My son is always pretty true to his size, when he's 5 years old he wears 5, when he was 4 he wore 4t, etc. Go by their general size. the jeans are nice and sturdy and hold up well under rough playing. overall its a good pair of jeans.