These pajamas are our absolute favorite. With a child who often overheats at night, KP fabric is a godsend. Can't say enough positive things about them. They do run small, order (at a minimum) 1 size up from your child's current clothing size. I prefer 2 sizes up for a little room to grow. The pants are long but the tops run short and tight. I have tried several popular pajama brands at both high and low price points - you name it, we've given it a shot. Nothing compares for us. I would be less likely to recommend if your child is frequently cold at night, but if you have a sweaty sleeper, these are 100% worth the price.