Inspired by the classic tracktop Orion, the Sergio Tacchini Grello Crew Neck T-Shirt combines retro style with modern comfort. With its clear sky and maritime blue colour scheme. Elevate your wardrobe with this timeless piece. Size Guide;Small = 37-38" chest (20-21" pit to pit measure). Medium = 38-40" Chest (22"). Large = 40-42" Chest (23"). X-Large = 42-44" Chest (24"). 2XL = 44-46" Chest (25"). 3XL = 46-48" Chest (26-27"). 4XL = 48-50" chest (28+"). Colour: blue