Case Study: How Zonate Rebuilt Its Watch PDP Around Upsells, Interlinking, and a Smarter Cart Drawer

Zonate sells interchangeable-bezel dive watches. One watch, many looks — the entire brand premise is that you buy the watch once and switch bezels whenever you want.

The problem: the old product page never told that story. It looked like what it was — a lightly-touched default Shopify template. Title, price, a row of variant thumbnails, quantity stepper, add to cart. Three thin accordions for shipping, returns, and specs. At the very bottom, a generic "Related products" grid assembled by the recommendation engine, complete with raw pr_prod_strat tracking URLs leaking into the status bar.

Nothing on the page sold a second bezel. Nothing connected the watch to the bezel catalog. And once a shopper added to cart, the journey simply stopped.

Here is what we changed, and what happened.

The before: a PDP that ends at the add-to-cart button

The original page had the right raw material — clean product photography, honest pricing, free shipping, and a 60-day return policy. But structurally it worked against the business model:

• The multi-bezel story was invisible. Variant swatches let you switch which watch you were buying, but nothing suggested you could own several looks. The brand's core differentiator was buried in an accordion labelled "Watch Details."
• Merchandising was outsourced to the default recommender. The "Related products" grid at the bottom of the page showed near-identical watches — competing with the product the shopper had already chosen instead of complementing it.
• The page was a dead end. No breadcrumbs, no links into the bezel collection, no path anywhere except back-button or checkout.
• Add to cart was a full stop. The cart experience confirmed the item and nothing else — no reassurance, no next step, no reason to keep shopping.

What we built

1. Upsells that match how the product is actually used

The rebuilt page on zonate.com puts the bezel system at the center of the buying decision:

• A "Complete Your Look" module sits with the buy box and offers four bezel add-ons — Gray, Green, Blue, Black & Gray — each a one-tap +299 DKK addition to the order.
• A "Switch Up Your Look" section reinforces the mechanic with plain-spoken copy: "Add a bezel pack as a separate purchase — your watch price stays the same." Shoppers can select multiple bezels at once.

The upsell is not a random cross-sell. It is the product's own story, priced and placed at the moment of commitment. That is the difference between an attach rate and an annoyance.

2. Interlinking that turns the PDP into a hub, not a dead end

• Breadcrumbs (Watches / Pivot) anchor the shopper in the catalog.
• The page links out to the Watches and Bezels collections and to a dedicated Bezel Switch instructional page that shows how the swap works — answering the "is this fiddly?" objection with content instead of hoping nobody asks.
• Trust messaging was promoted from buried accordions to a visible row: free shipping on all orders, 60-day at-home returns, 3-year warranty — followed by a full specification block and a seven-question FAQ.

Interlinking did double duty here: it keeps hesitant shoppers moving through the catalog instead of bouncing, and it gives search engines a coherent structure connecting watches, bezels, and the how-it-works content.

3. A cart drawer that keeps the journey going

The cart was rebuilt as a drawer with clear "Added to cart" confirmation, so the shopper never loses the page context. Even its empty state now works for the store — instead of a bare "Your cart is empty," it offers suggested browsing links back into the collections.

Add-to-cart stopped being the end of the page and became the middle of the visit.

The numbers

Comparing the twelve months after the rebuild against the prior-year period in Shopify analytics:

• Average order value: €122.54, up 377%. This is the headline effect of the bezel add-on strategy — orders now regularly carry more than the watch alone.
• Add-to-cart rate: 2.35%, up roughly 12×. The buy box finally gives shoppers something to say yes to.
• Checkout completion improved at every step — of sessions that reached checkout, completion was up 50%, with reached-checkout up 25%.
• Orders up 41%, fulfilled orders up 170%, total sales up ~30× — on session volume that grew about 21× (11,824 sessions, driven heavily by mobile and Facebook traffic).

One honest caveat, because case studies that hide their denominators deserve suspicion: the blended session-to-purchase conversion rate fell against the comparison window. That is what happens when traffic scales 21× with cold paid social sessions — the mix changes. The signal that matters is that the per-step funnel rates improved while traffic scaled, and each order got 4.8× larger. Cold traffic plus a stronger page beat warm traffic on a weak one.

What to take from this

1. Sell the product's own story as the upsell. Zonate's best cross-sell was never another watch — it was the second bezel. Most stores have an equivalent: the refill, the accessory, the companion piece. Default recommenders will not find it for you.
2. Kill the dead ends. Every PDP should link somewhere useful — collections, how-it-works content, the cart drawer's next step. Dead ends are where sessions go to expire.
3. Treat the cart drawer as merchandising surface, not a receipt. Confirmation plus continuation beats confirmation alone.
4. Judge changes by AOV and step-level funnel rates, not blended conversion alone — especially while traffic is scaling or the mix is shifting.

If you want this kind of read on your own product pages — what the page fails to sell, where the journey dead-ends, and what it is costing you — run a HiveSense audit on your store.

Who did the work

The Zonate PDP redesign, upsell and interlinking build, and the cart drawer update were designed and implemented by Thought Bulb — the studio behind HiveSense. If you want a storefront rebuilt around how your product is actually bought, see more of their work or book a call.