Kinship is a marketplace. Your piece is supplied by one of our established luxury retail Partners, primarily in Japan. Every Partner is accepted only after a thorough audit and a full business background check, and our Partner Network includes only established retailers that sell new products. We never sell second-hand items.

Every item passes professional third-party authentication plus our own quality-control checks. An independent third-party specialist verifies the piece first. Our own quality-control team then inspects it at our Hong Kong inspection hub for condition and defects. Only then is the order dispatched.

Every order arrives in the brand’s original packaging with the original labels attached.

Every purchase is backed by our Authenticity Guarantee. The full process, and what to do if you have a concern, is set out on our Authenticity Guarantee page.

We do not publish their names.

We engage brand-specific Japanese authenticators, each with decades of experience in the luxury fashion industry. We keep both our Partners and our authenticators confidential: many businesses in this industry compete over the same stock, and disclosing these contacts would benefit competitors. Our customer care team gives the same answer if you write and ask.

What we can tell you is exactly what happens to your piece and who does what — see our Authenticity Guarantee page.

Kinship operates as a marketplace. Products are offered through our network of established luxury retail Partners, primarily in Japan. The purchase contract for a piece is between you and the Partner that supplies it, as set out in our Terms of Service.

Every Partner is accepted only after a thorough audit and a full business background check. Our Partner Network includes only established retailers that sell new products. We never sell second-hand items.

We do not publish the names of individual Partners. Our Partner Network is our company’s proprietary asset, and many businesses in this industry compete over the same stock.

Kinship is a marketplace, and we list pieces from across a network of established luxury retail Partners, primarily in Japan.

No single boutique carries every size, and stock does not run out everywhere at the same time. A size that has gone at one retailer is often still on the shelf at another. Drawing on many established retailers rather than one is why a piece that is sold out in your own market may be still available here.

There is a trade-off, and it is the reason our delivery estimate is 5–10 business days rather than next day. Some pieces — usually the harder-to-find ones — are secured from a Partner after you place your order, then verified by an independent third-party specialist and checked by our own quality-control team at our Hong Kong inspection hub before dispatch.

You are never locked in while that happens. You can cancel any unshipped order at any time for a full refund.

Availability changes as stock moves across our Partner network — a piece that is unavailable today can return when a Partner has it again.

Email contact@kinship.jp or use the form on our Contact page with the piece, colour and size you are after, and we will let you know as soon as it becomes available again.

Every order arrives brand new, in the brand’s original packaging - including the brand box and dust bag where the brand provides them - with the original brand tags and labels attached.

Please note we do not include store receipts, purchase invoices, or paper certificates. Our checks stand behind your piece instead: an independent third-party specialist verifies it, and our own quality-control team inspects it at our Hong Kong inspection hub before it is dispatched to you.