Sportswear or activewear is clothing , including footwear , worn for sport or physical exercise . Sport-specific clothing is worn for most sports and physical exercise, for practical, comfort or safety reasons. Typical sport-specific garments include shorts , tracksuits , T-shirts , tennis shirts and polo shirts . Specialized garments include swimsuits (for swimming ), wet suits (for diving or surfing ), ski suits (for skiing ) and leotards (for gymnastics ). Sports footwear include trainers . It also includes some underwear, such as the jockstrap and sports bra . Sportswear is also at times worn as casual fashion clothing. For most sports the athletes wear a combination of different items of clothing, e.g. sport shoes , pants and shirts . In some spo...