The document discusses athleisure clothing, which is a hybrid style typically worn for both athletic activities and casual occasions. It notes that the global sportswear market was estimated at $262.51 billion in 2019, expected to reach $288.42 billion in 2020, though another report stated it hit $533.5 billion that year. The author then says they will only provide a brief overview and not discuss the entire topic, noting the term "athleisure" was recently coined to blend the meanings of leisure and athletic wear.