Overview

Amazon has introduced a self‑service utility inside Seller Central that lets merchants build, upload, and modify size charts without contacting support. The feature is aimed at reducing the high rate of “wrong size” returns that dominate apparel and footwear categories, making accurate sizing information instantly available on product pages.

Key Points

• Self‑service upload — Sellers can generate and edit size charts directly in the dashboard, eliminating the need to open a case with Amazon support. For example, a boutique apparel brand can add a new chart for its summer dress line in minutes.
• Single‑item or bulk application — The tool accepts a chart for one ASIN or lets the same chart be linked to dozens of listings at once. A shoe manufacturer can attach one European‑size chart to 15 different sneaker SKUs in a single operation.
• Custom measurement fields — Merchants choose which dimensions (chest, waist, inseam, etc.) appear on the detail page, allowing brand‑specific sizing guidance. A plus‑size retailer can display both “regular” and “curvy” measurements side by side.
• Real‑time error checking — The system scans the uploaded data for missing fields, unit mismatches, or formatting issues before the chart goes live. If a chart lists “30 cm” for waist and “12 in” for hip, the validator will flag the inconsistency instantly.
• Direct effect on return rates – Precise size charts have been shown to cut “wrong size” returns, which represent the majority of refunds in clothing and shoes. A seller who switched from Amazon’s generic chart to a custom one saw a 12 % drop in return volume over a quarter.

How the Custom Size Chart Tool Works

1. Select ASINs — Choose one product or a group of listings that share the same sizing structure. For instance, a seller of a unisex hoodie line selects 20 ASINs that differ only by color.
2. Enter measurements — Input body or garment dimensions for each size label, using a consistent unit (inches or centimeters). A footwear brand records foot length for sizes 6‑12 in centimeters, ensuring every size has a complete row.