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Diamond Theory Clothing

Paradox T-Shirt: Muscle

Regular price £60.00 GBP
Regular price Sale price £60.00 GBP
Sale Sold out
Tax included.

The Shirt

- Signature White Muscle Fit Men's Shirt
- Available in Windsor Collar and Monk Collar
- Long Sleeve

We challenge you to find a better fitting shirt.

We have designed the perfect cut to accommodate real muscle. What does that mean? It means this shirt will fit broad shoulders, wide lats and a narrow waist. This is clothing for pros.


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.

Shipping & Returns

Free Shipping
For returns please see returns policy for further detail


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. 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.


For the Bodybuilders:

Size Guide, Muscle Fit, Muscle Fit Shirt, Muscle Size Guide



For the Mass Monsters:

Mass Fit Shirt Size Guide


Our Training Fit Size Guide:

Training Fit Size Guide

Care Instructions

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

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