• Our unisex pieces are available in sizes XXS–XXL.
• Women: Take your usual size for a relaxed yet balanced fit.
• Men: Refer to our Size Guide and the model’s measurements on each product page.
• Men styles may run slightly small. If between sizes, we recommend sizing up.
• Review Model sizes for good estimate for your fit.
• Reviewing the Size Guide and fit notes and measurements ensures the best possible fit.

Yes. Sin Of Hearts offers worldwide shipping with trusted courier partners. Delivery costs and times are calculated at checkout. You’ll receive tracking details once your order has been dispatched.

• Orders are typically processed within 1–3 business days.
• Domestic: 2–4 business day. More accurate estimate at checkout.
• International: More accurate estimate at checkout.7-10 business days
• During collection launches or high-volume periods, dispatch times may be slightly extended

Returns & exchanges accepted within 7 days of delivery. Items must be unworn, unwashed, unaltered, with tags attached. Customers pay shipping on exchanges.

International

• Returns accepted within 7 days for a refund.
• No exchanges at this time.
• $20 return fee applies.
• Customers pay for their own return shipping, customs and taxes.
• If you want a different size or item, place a new orderand return the original.

Use a trackable, insured courier marked “Return of Merchandise.” Return Address

How to Request

Press the Help/Support button on our site with your order number and item details

*Important:* Sale items are final sale and cannot be returned. Exchanges are accepted only for items of equal or greater value. Items must be unworn with all original tags attached. Please email sin@sinofhearts.com for exchange approval and include a photo of the unworn item before sending it back. Items returned without prior approval or showing signs of wear will not be accepted.

Yes. All prices are final at the time of purchase. Sin Of Hearts does not offer price adjustments, price matching, or retroactive discounts on past orders.

Once an order is placed, it cannot be modified. Please ensure all details, sizes, and items are correct before completing your purchase.

Sin Of Hearts pieces are made with care and intention across the world. All garments are made with love in the USA, China, and Türkiye, with production expanding to Portugal and Italy in the near future.

We partner only with ateliers that share our dedication to quality, ethics, and refined construction.

We primarily work with premium natural and innovative fabrics, including organic cotton, Italian wool, silk blends, and recycled fibers. Each material is chosen for its texture, structure, and longevity, balancing modern design with everyday functionality.

We recommend gentle washing or dry cleaning depending on the fabric. Avoid tumble drying and harsh detergents to maintain garment integrity.

At this time, Sin Of Hearts is available exclusively online. Follow us on Instagram for updates on upcoming store openings and news: @sin.of.hearts

For direct support, press the help/support button on any page of our website. Assistance is available Monday–Friday, 9AM–6PM (local time).