Theory Shirts for Men

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Theory is an American clothing brand that specializes in high-end trousers. The label developed an innovative stretch fabric for its first women's pants and later applied similar technology to its men's collections. These simple, chic, functional designs are essential wardrobe staples.
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Customer stories
Discover the joy of luxury shopping with italist through the experiences of our valued customers. Read their stories and see why fashion enthusiasts worldwide choose italist for authentic, high-end finds at the best prices.
Yamile M.
Awesome experienceMy boyfriend loved his fendi shirt, fit just right and came in about a week! Will definitely order again!
Adam P.
I found the shoes II found the shoes I wanted for far less than what other websites were charging. Ordering was easy and my shoes arrived in a short time! I will definitely use this site again and would recommend it to others.
Wai L.
Good purchaseItem was in good condition and packaged with care. Professional delivery. Love this Prada bag.
Craig A.
Another Stellar Purchase!!This is my third or fourth order with italist, and I am thrilled yet again! Super fast international shipping, and item was well-packaged! Thank you!

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