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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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Vests

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Theory Coats & Jackets for Women Theory Classic Formal Gilet

Crewneck Ribbed Knit Vest

Crewneck Ribbed Knit Vest

Round Neck Plain Gilet

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.

Margiela JeansOrdered Margiela jeans in size 34 that's been long out of stock and saw it, ordered it, and it came in like 2 business days!!! My first time ordering and it was insanely impressive!!!

The BEST for luxury goods!I can't give enough positive feedback for Italist.com! Every item I have purchased has been perfect. From quick shipping, to the way the item is packaged, it's always a great experience. I will continue purchase items from Italist!!!

Fendi Black Knit Logo Hi-top SneakersThese shoes are absolutely high quality. I enjoyed seeing the velvet color-blocking design online, especially the stripped sock ankles on the side of the shoe. Glad I bought these, they are super comfortable and are form-fitting. Found an amazing deal at 60% off and size is true-to-size.

Great experience!So many selection top choose from and fast delivery. Love the shoes that I received, and looking forward to more purchases!