Overview

Amazon's Large and Oversize program applies to products that exceed standard-size dimensions or weight thresholds, requiring special handling, shipping methods, and fulfillment considerations. For third-party sellers, understanding this program is essential because it directly impacts fulfillment fees, storage costs, and the shipping experience you offer customers. Items in this category — think furniture, large appliances, sports equipment, and lawn and garden products — present unique logistics challenges but also represent high-value, high-consideration purchases with strong revenue potential.

Key Points / What Sellers Need to Know

• Automatic enrollment — Sellers don't opt into the Large and Oversize program manually. If your product meets the size or weight specifications, it's automatically classified under this designation.
• Higher fulfillment and storage fees — Large and oversize items carry unique FBA fulfillment fees and storage fees that are significantly higher than standard-size products. Factor these into your pricing strategy.
• SIOC requirement for mid-range items — Products with a longest side between 70 and 96 inches must be classified as Ships in Own Container (SIOC), meaning they must arrive at the fulfillment center in packaging that can withstand delivery without additional over-boxing.
• Two shipping methods available — Sellers can ship these items via standard US carrier services or use Amazon's freight-shipping template for items typically exceeding 150 pounds that require less-than-truckload (LTL) shipment.
• Customer delivery scheduling — Freight shipments offer two delivery options: Scheduled Delivery (carrier contacts the customer to arrange an appointment) and Flexible Delivery (customer selects an available delivery slot at checkout).

Size Tier Classifications

Amazon defines multiple size tiers that determine how your product is categorized and what fees apply. The key oversize thresholds sellers should understand are based on longest side, girth measurements, and unit weight.

For a product to qualify as large oversize, it must meet at least one of these criteria: longest side between 18 and 70 inches, median side of 14 inches or more, shortest side of 8 inches or more, or unit weight between 20 and 50 pounds. The girth calculation — defined as (median side + shortest side) multiplied by two — also factors into tier placement.