A garment worn by basketball players during warm-up periods and on the sidelines, particularly in professional settings, serves to keep muscles warm and loose prior to and during periods of inactivity in a game. Often made of a lightweight, breathable material, it provides a layer of insulation without restricting movement. For example, athletes often wear this type of shirt while practicing their shots before the game starts.
The practice of utilizing these shirts offers several advantages. Maintaining muscle warmth can contribute to injury prevention and enhanced athletic performance. Historically, these shirts have also evolved into a symbol of team unity and individual player style within the league. The designs and colors often reflect team branding, making them a recognizable element of the sport’s visual landscape and merchandise.