We normally have to buy the Next snuggle fit pyjamas as my boy is very slim. Think Mowgli from the original jungle book. He's getting really tall now and age 5-6 is getting too short in the leg. The problem is he's too slim for the next size up in any other shops. Anyone seen boys pyjamas with draw string? I'd like long pyjamas as we've got short sets and we live in Scotland so even in summer the mornings can be chilly! Thanks!