The Ultimate Athletic Fit Short-Sleeve Shirt – Precision Cut, Supreme Comfort, Incredible Look

Elevate your style with The Havana, the best-fitting short-sleeve shirt engineered for athletes. Crafted from premium, ultra-soft fabric with a meticulously woven texture, this shirt delivers an unbeatable combination of comfort and style. In other words you look huge and feel like a boss.

Designed with precision-cut tailoring, it contours perfectly to your body, accentuating your physique without feeling restrictive. The strategic fit ensures room where you need it and a sleek taper where it counts, giving you that effortlessly sculpted look. Plus, the perfect drape enhances your silhouette, making it your go to shirt.

Whether you're on holiday, heading out, or just want a shirt that moves with you, The Havana is built for Pros. Experience next-level fit, feel, and confidence—because you shouldn’t have to choose between style and function.

Upgrade your wardrobe today.

Model is wearing XL.

Diamond Theory has 2 Fits for shirts:

Muscle and Mass

• Muscle: This fit is designed with Bodybuilders in mind as this has an aggressive taper, bringing it right in at the waist.
  
• Mass: This fit is designed with Strongmen in mind as this has a less aggressive taper as Strength Athletes tend to have a thicker core.

Please take this as a reference and refer to the size guide with your measurements.

Check our Size Guide. Select the shirt most accurate to your measurements.

This shirt has been engineered from the ground up specifically for real athletes who carry real muscle and mass. Designed to drape and flow like a shirt should.

Before you order, please make sure you measure yourself and choose your size according to the size guide. Take your chest measurement and your waist measurement. No need to order a size down for a tighter fit.

Suggestion: If you are at the top of a size bracket, opt for the size up.

Shirts

For the Bodybuilders:

For the Mass Monsters:

 Jerseys

Our Training Fit Size Guide:

Our shirts are made of 97% cotton and 3% elastane. Why? Simply put, because this is the best fabric blend to use. Cotton is lightweight and breathable, which means you are comfortable and don’t overheat. We use a small amount of elastane to allow for a little bit of stretch to aid comfort. We don’t use too much so the fabric remains lightweight, breathable and of the highest possible quality.

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For returns please see returns policy for further detail

Wash on a low heat, air dry and press. Do NOT tumble dry.