Having never heard of it… “Futsal”… I looked it up:

Futsal (Portuguese pronunciation: [futˈsal]) is a variant of association football that is played on a smaller field and mainly played indoors. It can be considered a version of five-a-side football.^[1] Its name comes from the Spanish Fútbol sala or fútbol de salón , which can be translated as “room football”. It was developed in Uruguay and Brazil in the 1930s and 1940s.

In Brazil futsal is played by more people than football but does not attract as many spectators as the outdoor sport. Several futsal players have moved on to careers as successful professional football players.^[2]

Your Dad coached the team – he knows a lot about soccer – so you’ve learned a lot about it over the years. This sport kept you busy through the longest winter months of February and March.  Here’s a photo of you giving the futsal a big winter boot: