Buy & SellUnder Armour Blue Long Sleeve Shirt. Size SUnder Armour Blue Long Sleeve Shirt. Size S$5Here's a bright blue long-sleeve shirt from Under Armour! It features a mock neck and the Under Armour logo on the front. Perfect for layering or wearing on its own!BrandUnder Armour0 chats·0 favorites·7 viewsSELLERMama of two kidsHarwood Heights16014 reviewsWHERE TO MEETCheck Location