Decathlon dinghy sailing smock.
Labelled size is 14 years, but these are tight fitting.
Great for keeping the wind off if you have a thinner wetsuit.
Pockets on the sleeve and at the front - ideal for putting a snack or the wrappers in.
Waist band has velcro on neoprene, which helps stop it riding up when out on the water.
Neck has a velcro seal, but my kid preferred leaving that open to get some more movement.
Still in great condition.