Nike Just Do It Swoosh T-Shirt Boys. Nike Just Do It Swoosh T-Shirt BoysStay casual with this Nike Just Do It Swoosh T-Shirt. Constructed from a soft, lightweight fabric for a comfortable fit it features a crew neckline and short sleeves for a classic look. This piece is finished with Just Do It branding and the iconic Nike swoosh tick.> T-Shirt> Crew neckline> Short sleeves> Lightweight> Athletic cut> Nike branding> 100% cotton> Machine washable