Limited Time Offer on Pants - 2+ Get 20% off, 3+ get 25% off* SHOP WOMEN SHOP MEN T&C Apply
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Theory Wardrobe
1 capsule. 6 styles. Endless ways to wear.
Versatile, impeccably crafted, and timelessly designed. Defined by precise tailoring perfected in our New York atelier and premium fabrics sourced from the world’s best mills, the styles in this capsule are our most sought-after pieces. Available year round, these bestsellers simplify the act of getting dressed, so you can focus on what matters most.
Named for good reason, this one-button suit jacket proves its worth with every wear. It’s a sleek, streamlined style precisely tailored to finish your look strong.
This is your not-so-basic button-up. Its slim, precise fit and silky smooth texture yield a sophisticated, breathable finish. An elegant style that looks as polished as it feels—dressed up or down.
Our most iconic, fundamental fit, this cigarette pant is slightly cropped with sharp intention. It’s an effortlessly polished mainstay you'll wear for years to come.
Flared Trousers in Good Wool
Flared Trousers in Good Wool
Tailored for an elongated effect, this mid-rise pant offers just the right amount of attitude. It’s streamlined through the leg and finished with the perfect hint of flare.
Your softest sweater becomes your most-loved tee in this slim-fitting base. Our incredibly soft, impossibly lightweight wool makes it a no-brainer, no matter the season.
Sweater Tee in Regal Wool
Sweater Tee in Regal Wool
Sweater Tee in Regal Wool
This boatneck, knee-length silhouette is an instant classic. From its minimal, '90s-inspired look to the subtly flared hem, every detail comes together in a flattering, feminine profile.
Complete Your Wardrobe
Treeca Trousers in Good Wool
Exclusions
(1) Promotional Period: From April 1, 2024 until further notice. (2) Eligibility: Customers who successfully subscribe to Theory Newsletters during the Promotional Period (“Eligible Customers”). (3) Designated Store in respect of this Promotion: The new Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (4) How to enjoy this Promotion: Eligible Customers can enjoy 15% off on regular-priced products at Theory Online Stores (subject to the Excluded Products as defined below) (the “Discount”) by entering the promotional code at checkout. The promotional code would be sent, via email, to Eligible Customers upon successful newsletter registration. (5) General Terms and Conditions: The Discount only applies to the first order placed by Eligible Customers on Theory Online Stores. The Discount does not apply to the purchase of Theory Project products, Bundles and permanent/core items (the “Excluded Products”). The Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. Theory reserves the right to amend these Terms and conditions without prior notice. Theory reserves the right of final decision in case of any dispute.
BUNDLE PROMOTION
(1) Promotional Period: The Promotional Period is from 1 July, 2025 until further notice. (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy an additional discount upon purchasing, as the case maybe, 2 or 3 items of the same style (as may be designated by Theory from time to time) in any size or color (collectively the “Designated Items”) in one single transaction at Theory Online Stores (collectively the “Discount”). The Designated items, and the number of Designated Items required to be purchased to unlock the Discount, will be specifically marked on Theory Online Stores. Customers are required to add the Designated Items into bag to unlock the amount of the Discount. The Discount will automatically apply at checkout. (4) General Terms and Conditions: The Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. Theory reserves the right to amend these Terms and conditions without prior notice. Theory reserves the right of final decision in case of any dispute.
KELSO SPECIAL OFFER
(1) Promotional Period: The Promotional Period is from 1 August 2026 to 30 September 2026 (both days inclusive). (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy 25% off (the “Discount”) upon the purchase of two regular-priced Kelso items in one single transaction at any Theory Online Stores. The discount applies to regular-priced items only, and does not apply to any other products. The Discount will automatically apply at checkout. (4) General Terms and Conditions: This promotion only applies to regular-priced items, and does not apply to Bundles and discounted products. The Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. This promotional offer cannot be used in conjunction with Theory staff discount. Theory reserves the right to amend these Terms and conditions without prior notice. Theory reserves the right of final decision in case of any dispute.
LIMITED TIME PANT OFFER
(1) Promotional Period: The Promotional Period is from 4 September 2026 to 13 September 2026 (both days inclusive). (2) Designated Store in respect of this Promotion: Theory Online Store at hk.theory.com, tw.theory.com, sg.theory.com and au.theory.com (collectively “Theory Online Stores”). (3) How to enjoy this Promotion: During the Promotional Period, all customers can enjoy the following discounts (collectively the “Discount”) upon meeting the following designated purchase threshold in one single transaction at Theory Online Stores: (1) Purchase 1 pair of regular-priced pants and get 15% off; and (2) Purchase 2 pairs of regular-priced pants and get 20% off; and (3) Purchase 3 pairs of regular-priced pants and get 25% off. The Discount will automatically apply at checkout. (4) General Terms and Conditions: This promotion only applies to regular-priced items, and does not apply to Bundles and discounted products. The Discount cannot be used in conjunction with any other discounts, promotional offers and coupons (including but not limited to Theory VIP discounts/Theory VIP Birthday discounts, Credit Card Year-Round Discount and Theory CRM Coupons). The Discount cannot be transferred nor exchanged for cash or any other gifts or coupons. This promotional offer cannot be used in conjunction with Theory staff discount. Theory reserves the right to amend these Terms and conditions without prior notice. Theory reserves the right of final decision in case of any dispute.