Como dizer "trilho de camiseta" em inglês

Hi people! I have a very specific one. I think it's seamstress knowledge, I couldn't find it online. So today my student referred to a part of her jersey as the "trilho". She made a motion showing the area going from the shoulder downwards. It's worth to say this woman works with brand placement in soccer jerseys, and was telling me that in travel kits that's where the brands usually go. If anyone can figure out a safe translation to this word it would be amazing! Thanks in advance