Boys sets give him a ready-made outfit for school, sports and weekends, with most styles built around a hoodie or sweatshirt and joggers. Sizes run from 6M to 18Y, so you can find matching tracksuits for toddlers right up to teens.

Under Armour has the widest choice of logo sets, from big logo and Double Zone sets to symbol and block hoodie and sweatpants sets, all in 4Y to 7Y. Mayoral covers 3Y to 9Y with tracksuits, including 3-piece styles and a set with two pairs of joggers, and older boys up to 18Y with two-piece tracksuits; a baby shorts and bow tie shirt set (6M to 3Y) covers dressier days.

For warmer days, Deux par Deux has organic cotton T-shirt and short sets in 6m to 6 and a hooded terry T-shirt and shorts set up to size 12, plus T-shirt and pant sets in 2 to 4. Converse adds T-shirt and shorts and crew jog sets in 2Y to 4Y and a dino hoodie and joggers set in 12M to 24M, while L’ovedbaby has organic printed sweatshirt and jogger sets in 12–18M to 4T. A Nanica brocade set is also available in 6Y to 16Y.

To mix your own outfit, pair boys joggers with a top from boys sweaters and hoodies. For infant sizes, see baby boys sets.