Product size tier

Definition	Product size tiers are measurement categories based on the unit weight, product dimensions, and dimensional weight of a packaged item.
Using this article	The product size tier of an item is used to calculate certain fees. After reading this article, you will be able to determine the product size tier for an item. To accomplish this task, you should first know the unit weight, product volume and dimensions, and the dimensional weight of the item.
Fees that use this attribute	FBA fulfillment fees Monthly inventory storage fees Long-term storage fees FBA inventory storage overage fees FBA removal & disposal order fees Fulfillment fees for Multi-Channel Fulfillment orders
Related terms and articles	Unit weight Dimensional weight Product dimensions and volume Shipping weight FBA fees reimbursement policy: Weight and dimensions

How to determine the product size tier

Determine the volume and dimensions of the item.
Determine the unit weight and dimensional weight* of the item.
Use these values with the table below to determine the product size tier.

Find the row in the table below with measurements that do not exceed the weight or the dimensions of your item.

Product size tier	Unit weight*	Dimensional weight*	Longest side	Median side	Shortest side	Girth
Small envelope	80 g	N/A	20 cm	15 cm	1 cm	N/A
Standard envelope	460 g	N/A	33 cm	23 cm	2.5 cm	N/A
Large envelope	960 g	N/A	33 cm	23 cm	4 cm	N/A
Extra large envelope	960 g	N/A	33 cm	23 cm	6 cm	N/A
Small parcel	3.90 kg	N/A	35 cm	25 cm	12 cm	N/A
Standard parcel	11.90 kg	N/A	45 cm	34 cm	26 cm	N/A
Small oversize	1.76 kg	25.82 kg	61 cm	46 cm	46 cm	N/A
Standard oversize	29.76 kg	86.4 kg	120 cm	60 cm	60 cm	N/A
Large oversize	31.50 kg	No limit	Over 120 cm	Over 60 cm	Over 60 cm	N/A
Special oversize	Over 31.5 kg	N/A	Over 175 cm	N/A	N/A	Over 360 cm

*For small, standard and large oversize items, use the larger of the single unit weight or the dimensional weight. Go to Dimensional weight for more details. For all other items including envelope, parcel and special oversize products, use the unit weight.

For the products that you currently have in FBA inventory, you can also look up your unit weight using the Fee Preview report. To do so:

Download the report
Identify the product you want to look up using its FNSKU
View the product size tier in the item-package-weight field

Product size tier examples

Mobile device case

Dimensions: 30 x 20 x 2 cm

Unit weight: 350 grams

Product size tier: Standard envelope

T-shirt

Dimensions: 32 x 22 x 5 cm

Unit weight: 800 grams

Product size tier: Extra large envelope

Frequently asked questions

Which measurement system does Amazon use to measure products and calculate fees: imperial or metric?

The measurement system for product dimensions and volume vary depending on the local standard in which the fees are calculated. The fee pages for the region indicates which measurement system and units of measure are used for that region. For example, the metric system is used in Europe, so products in that region are measured based on meters and grams.

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