How to create product bundles on the Flow theme (checkout-safe)

Flow, by Out of the Sandbox, is a content-led premium theme built for brand storytelling and editorial stores — long, narrative product pages that sell through mood as much as specs. On a page like that, one clear offer beats a wall of banners. This guide covers how to create product bundles on the Flow theme in a way that fits its layout and stays checkout-safe.

Two ways to bundle on Flow

Shopify’s native Bundles app sells a fixed set of products as a single item. It fits a curated “shop the story” kit, but it is a separate product with its own setup, not an offer on your existing narrative page.

A product-page bundle widget shows a quantity offer — BOGO, 3-for-2, volume tiers — right in the product section, so shoppers upgrade without leaving the story. The free Profit Flow AOV Bundle works this way and enforces the deal at checkout.

Setting it up on Flow

Flow is section-based (Out of the Sandbox), so placement is quick. In the theme editor, open your product template and add the Profit Flow app block to the product section, near add-to-cart.

The key with Flow is restraint. Its storytelling layout works best with a single, well-placed offer — one confident bundle near the buy button, not competing banners scattered through the narrative. Flow ships no checkout-enforced bundle of its own, so there is no native widget to disable to avoid duplicate offers; if you have added a separate upsell app, turn off its on-page bundle for that product so the page keeps one clean call to action.

Match the block’s type and spacing to Flow’s editorial style so the offer reads as part of the story.

Keep it checkout-safe

Most on-page bundle tools run entirely in the browser: the discount is drawn with JavaScript but never enforced, so an unqualified free item can reach checkout at the deal price.

Profit Flow enforces the offer with a Shopify Function inside Shopify’s checkout. Quantities and discounts are validated server-side, so the price shown equals the price charged. Tiered multi-buy pricing runs on the same enforcement — see our volume discounts.

For the full menu of mechanics, the hub guide on how to create product bundles on Shopify covers each one.

In short

On Flow, keep it to one deliberate offer that fits the narrative and let a Function keep it honest at checkout. Add the block, place it well, publish.

Telling a brand story on Flow? Install the free Profit Flow AOV Bundle, or book a free store audit and we’ll place it with you.