Note this is a slim fitting jacket if you require more room to grow then we recommend you order a size up to accommodate visibility and weather protection for the young cyclistencouraging your kids to be active and enjoy the outdoors means they should also have the kit they need to be safe on the road as well as protected when the weather turns a bit nasty dhb39s hi viz jacket is just the ticket with it39s bright fabric and reflective details it raises their profile to other road use