Each shirt is available in 2 sizes (1 EU and 1 US). You choose the EU size, which is the smaller US size. For example, you buy "medium" and get "small". The current size chart provides a more accurate sizing. "Reflective Details" are just two GORE badges for people who like to keep "GORE" close to their hearts. and puzzle others about their well-being. I wish they had better branding and more colors. The first t-shirt I received immediately started to unravel and some stitching was able to show through. The threads looked like cheap, crumbling polyamide. That doesn't say anything good about the t-shirt in general. Actual rating: 2 (Revain community trolls remove everything under 4) This rating number was published: 1