A polo shirt, is a form of shirt with a collar, a placket with typically two or three buttons
A Roundneck T-shirt is a style of unisex fabric shirt named after the T shape of its body and sleeves. It normally has short sleeves and a round neckline, also known as a crew neck
A singlet is a sleeveless athletic jersey, especially a loose-fitting top
A Long sleeve - a sleeve extending from shoulder to wrist. sleeve, arm - the part of a garment that is attached at the armhole and that provides a cloth covering for the arm
A baseball cap is a type of soft cap with a rounded crown and a stiff peak projecting in front. The front of the cap typically contains a design or a logo of sports team
A shirt is a cloth garment for the upper body (from the neck to the waist) is more specifically a garment with a collar, sleeves with cuffs, and a full vertical opening with buttons or snaps
A hoodie is a sweatshirt or a jacket with a hood. Hoodies often include a muff sewn onto the lower front, and (usually) a drawstring to adjust the hood opening.