Casual and comfortable, a grey marl organic cotton tracksuit for boys by Stella McCartney Kids. Made in mid-weight jersey with a cosy fleecy inside, it features a fun farmyard theme, with colourful prints of vegetables, farmyard animals and farming implements. The sweatshirt has ribbed trims for a snug feel and the joggers are gently elasticated around the ankles and drawstring waist, with useful side seam pockets. The Stella McCartney fit can be quite small so choose a size up if you want room to grow.