Show up sharp with the Calvin Klein Mens button down long sleeve shirt in size 3XL. Built for clean modern style, this collared essential delivers a polished look that works for office days, events, dinners, and smart casual weekends. The classic button front design creates an easy tailored finish that layers smoothly under blazers, jackets, and sweaters or looks crisp worn on its own. Long sleeves add year round versatility and can be worn cuffed for a relaxed vibe or buttoned for a refined profile. Pair it with chinos for a professional fit, dress pants for formal occasions, or dark denim for elevated casual style. Designed to feel comfortable while looking put together, this Calvin Klein shirt is a dependable wardrobe staple for big and tall sizing with timeless appeal.