The Business Casual — Men's Extended Size Long-Sleeve Shirt

Sharp style. Every size. No compromises.

The Business Casual is built for the man who refuses to settle for less just because his size is harder to find. Designed with extended sizing in mind, this long-sleeve shirt delivers a clean, confident silhouette that moves from the boardroom to the weekend without missing a beat. Roll the cuffs for a relaxed edge, keep them buttoned for a polished finish. Four versatile colorways that pair with everything in your rotation.

What Makes It Different

• Extended Sizing Built In — Designed to fit and flatter larger frames without sacrificing structure or style.
• Business Casual Versatility — Dress it up with trousers, down with dark denim. One shirt, every occasion.
• Long-Sleeve Cut — Roll the cuffs for casual. Keep them down for sharp. Your call.
• Breathable Fabric — Comfortable enough for all-day wear. Looks like you just put it on.
• Clean Structured Silhouette — Looks intentional. Feels effortless.
• 4 Colorways — White, Orange Red, Dark Gray, Sky Blue. A palette built for every setting.
• Sizes S–3XL — Check our size guide for the best fit.

Product Specs

• Fit: Relaxed, structured
• Sleeve: Long-sleeve with roll-up cuff
• Colors: White, Orange Red, Dark Gray, Sky Blue
• Sizes: S, M, L, XL, 2XL, 3XL
• Care: Machine wash cold, hang dry. Iron on medium heat if needed.

Sizing Note: These shirts run to an international slim standard — size up one to two sizes for your ideal Western fit.

How to Wear It

Pair with tailored trousers and dress shoes for a sharp business casual look. Wear with dark denim and clean sneakers for a polished weekend vibe. Layer under a structured blazer for a boardroom-ready edge. The Business Casual handles every version of your professional life.

Built for the Undefyned Man

At Undefyning Lynes, sharp style has no size limit. The Business Casual is part of The Undefyned Man collection — built for every man who shows up with intention, regardless of what the tag says.