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What is a SKU and how to use it?

May 5, 2022
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2
min read

Summary

A SKU (Stock Keeping Unit) is a unique code that identifies each product variant in your inventory, often including size, colour or style. Every combination of variants needs its own SKU. Managing SKUs well keeps products in stock and avoids costly under or overstocking.

[Founder / CEO] - SKU management underpins inventory control; poor tracking risks stockouts that damage your brand. - Plan your SKU structure before outsourcing fulfilment, as a 3PL will track products by SKU. - As ranges grow, SKU numbers multiply quickly; keep your catalogue decisions deliberate. [Operations] - Give each combination of design, colour and size its own SKU. - Use SKUs to locate and ship the right item, especially across multiple sizes. - Count your SKUs: 10 designs in 4 colours and 3 sizes makes 120 SKUs. [Marketing / eCommerce] - Accurate SKUs keep favourite items available so customers aren't let down. - Variant-level SKUs ensure customers receive the exact size and colour they ordered. - Out-of-stock bestsellers damage reputation; SKU tracking helps you spot gaps early. [Finance] - Under or overstocking eats into your bottom line; SKU-level tracking helps avoid both. - Each extra variant adds a SKU to store and manage, so weigh range breadth against stock costs. - Overstocked SKUs tie up money; identify slow movers by SKU. [Customer service] - SKU accuracy reduces wrong-item complaints about size, colour or style. - Use SKUs to check order details quickly when customers raise a query. - Clear stock data by SKU helps you tell customers when items will be available.
[FMCG] Give each pack size and flavour its own SKU so the right variant ships every time. [Health & wellness] Separate SKUs for different strengths or quantities help avoid wrong-item errors on supplements. [Beauty & cosmetics] Shades and sizes multiply SKUs quickly; track each one to avoid shipping the wrong shade. [Sustainable] Track refill and standard versions as separate SKUs so customers get the format they chose. [Subscription box] Assign SKUs to each box component as well as the box, so contents are tracked accurately. [Books] Use distinct SKUs for different editions and formats, such as hardback and paperback. [Pet supplies] Give each size of food bag or accessory its own SKU to avoid sending the wrong size. [Luxury goods] Track every variant precisely; high-value items make each picking error more costly. [Toys & games] Separate SKUs for editions, bundles and age versions keep seasonal stock accurate.
What is a SKU and how to use it?

If you own a business selling products, you've probably heard the term SKU thrown around a lot. But what does it mean and, more importantly, what can you do with it? In this blog post, we'll break down SKUs for you and show you how to put them to use.

What does SKU mean?

A SKU stands for Stock Keeping Unit. It is a code that is used to identify a product in your inventory. SKUs are typically assigned by warehouses or fulfilment centres like Zendbox, and are used to track products as they move through the supply chain. 

SKUs can be numeric or alphanumeric, and usually include information about the product such as the size, colour, or style. For example, a fulfilment centre might use SKUs to track different sizes of the same product, so that they can easily locate and ship the right item to the intended customer. You can think of a SKU as a unique identifier for a specific item in your inventory. When you create an order fulfilment strategy, you will need to consider how to track and manage your SKUs.

Calculating your SKUs

To calculate the number of SKUs in your inventory, it’s important to consider the different variants of your products. If you sell t-shirts in multiple colours and sizes, for instance, you will have a different SKU for each combination of colour and size. Let’s say you have 10 t-shirt designs, and each design is available in 4 colours and 3 sizes. You would have a total of 120 SKUs (10 designs x 4 colours x 3 sizes).

Why are SKUs important?

Understanding and managing your SKUs is an important part of operating a successful eCommerce business. By knowing how to identify and track your SKUs, you can ensure that your products are always available to your customers and that you are able to effectively manage your inventory. After all, under or overstocking your products can eat away at your bottom line and potentially damage your brand’s reputation if customers are unable to get their hands on their favourite items. Read about our Inventory Analysis tool to find out how you can avoid situations like this. 

‍If you’re looking to outsource your fulfilment process to a 3PL provider, get in touch. We’ve helped hundreds of eCommerce businesses make sense of SKUs, set up their inventory, and prepare their products for sale as part of our premium fulfilment solution.

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To have clear and long-term visibility of our stock’s status with Inventory Analysis is enormously powerful.

Tom Norton
Tom Norton
CEO, Mr Tubs

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Setting up SKUs before you outsource?

We'll help you set up SKUs and inventory during onboarding.

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Gilson Pereira
Head of Customer Experience at Zendbox

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