Frugi Boys Hooded Dinosaur Puddlesuit (1-10 Yrs) - 4-5 Y - Green Mix - Available at M&S
This waterproof Frugi puddlesuit is specifically designed to keep kids dry when they're splashing around in wet weather. It's made in a regular fit, with fully taped seams, a peaked hood and elasticated cuffs to keep water out. Adjustable, detachable foot stirrups add a practical final touch.