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Looking to update your wardrobe staples? Discover simple and stylish men's plain slim-fit T-shirts at River Island. Our vests and tees are lightweight and breathable for all-day comfort. Discover snug-fitting pieces in a range of colours that make it easy to match your top to your mood. For classic dressers, a slim-fit T-shirt looks extra cool tucked into a pair of smart trousers. If your taste is more eclectic, men's slim-fit vest tops are simple to layer under a printed shirt. More of a low-maintenance kind of guy? Our slim-fit T-shirt packs mean you can rock your go-to tee and jeans combo with endless options Look out for versions with the RI logo embroidered on the front to lend a little detail to these anything-but-basics.