Polarn O. Pyret Boys Pure Cotton Striped Leggings (1-10 Yrs) - 18-24 - Blue Mix - Available at M&S
These striped leggings from Polarn O. Pyret are crafted from pure cotton for a wonderfully soft feel. They're made in a regular fit, with button elastic at the waist so you can adjust the size as your youngster grows. Flat seams are comfy against their skin, while stretchy cuffs create a neat silhouette.