What Is a Size Run in Wholesale Clothing? How Size Packs Work

Quick answer: In wholesale clothing, a size run is an order group in which different sizes of the same style are offered together in a defined distribution. There is no universal standard for the number of pieces or the sizes in a run; these can vary by supplier, style and collection. Rather than simply asking “Is this style sold in a size run?”, the important question is what does the run contain, and does it suit my customers?

For boutique owners wondering what a wholesale clothing size run is, the most practical approach is to treat size runs as part of inventory planning. A size run lets you assess the size distribution of one style as a group rather than selecting each item separately. Before ordering, however, ask the supplier to confirm the sizes, quantities, colours and minimum order conditions.

What is a size run in wholesale clothing, and how does it work?

When different sizes of a single style are offered together as one ordering group, this is commonly called a “size run” or “size pack” in wholesale clothing. The purpose is to manage the size range of one style through a predefined mix rather than choosing each size individually.

For example, one supplier might offer several sizes of a style in one pack, while another might offer the same style with a different size mix. There is therefore no fixed, universally correct size run. Check the specific pack details for every style.

What is the difference between buying a size run and buying individual units?

With individual-unit purchasing, you can choose the quantity you want from a specific product or variant. With size-run purchasing, an order may follow a predefined distribution of sizes and quantities. The available method depends on the supplier's ordering rules.

This distinction matters especially when opening a new boutique: looking only at the total number of pieces can hide how many units you will receive in each size.

What information should you request when assessing a size run?

Before placing a wholesale order, asking for the following information clearly and in writing will make it easier to assess a size run:

• Which sizes are included? Ask for the actual size breakdown of the style.
• How many units are there in each size? Do not assume quantities are distributed equally.
• Are different colours mixed in the run or packed separately? Confirm the colour-specific ordering rules for the style.
• Can the size run be split? Some suppliers sell fixed packs, while others may offer more flexible quantities.
• How is the minimum order calculated? Rules may differ by number of pieces, style, size run or total order.
• Will the same size mix be available for reorders? Ask about replenishment terms in advance, particularly for fast-selling styles.

For Hanezza's current wholesale terms, see the Wholesale Sales FAQ page. The information there indicates that minimum order quantities may be flexible according to customer needs. Even so, the safest approach is to confirm the current size-run and quantity conditions for the exact style you intend to order.

How do you choose the right size run for a boutique?

There is no single “best size run” that suits every store. The right choice depends on your actual sales data and customer profile. If you are just starting out, it is better to make small, measurable decisions than to rely on assumptions.

1. If you have previous sales, examine performance by size

Review which sizes sell out faster and which stay on the shelves longer for each style. Looking at sell-through by size, rather than only total sales, makes size-run selection more meaningful.

2. Consider the product category as well as the size mix

Even for the same customer base, demand by size can differ between jackets, trousers, dresses and knitwear. Do not automatically copy a successful size distribution from one product category to another.

3. Take your sales channels into account

Customers may try clothing on in physical stores, while demand by size may differ online. If you sell through both channels, tracking size performance separately by channel can support better purchasing decisions.

4. Do not completely disregard slower-selling sizes

Focusing only on the fastest-selling sizes may seem convenient in the short term, but it can reduce the range of customers your boutique serves. The aim is to find the right balance between strong sales and sufficient size variety for your store.

To explore the categories and currently available styles, browse the plus-size women's clothing collection. This collection does not promise a fixed size-run arrangement; it simply helps you see the store's current product range.

How should you calculate costs when buying size runs?

For size-run orders, focusing only on “the price of one item” can be misleading. For a clearer assessment, consider the total number of pieces in the run, the expected sales speed of each size and the risk of unsold stock.

A simple checking method:

1. Confirm the total number of items in the size run.
2. Write the size distribution in a table.
3. Add your historical or estimated sales rate for each size.
4. Mark sizes that may sell more slowly.
5. Assess the total investment against the entire run, not just the fastest-selling pieces.

This adds a useful question to “Is this a good-looking product?”: “How quickly is this size run likely to sell through in my inventory?”

Eight questions to ask before placing a wholesale size-run order

• Is this style sold in size runs or as individual units?
• Which sizes are included?
• How many pieces are included in each size?
• How are colours distributed?
• Can the size run be split?
• How is the minimum order calculated?
• Can the same style be reordered?
• Can the current size-run details be confirmed in writing before purchase?

For current Hanezza wholesale terms and information about specific styles, you can submit an enquiry through the Wholesale Enquiry Form.

Frequently asked questions

How many pieces are in a wholesale clothing size run?

There is no fixed number. The contents of a size run can vary by supplier, product and style. Before ordering, confirm which sizes are included and how many pieces there are in each size.

Do I have to buy every size in a size run?

That depends on the seller's ordering policy. Some styles may be offered only in fixed size runs, while other suppliers may allow more flexible quantity selection. Confirm the current conditions for each style.

Are a size run and a minimum order the same thing?

No. A size run describes the size-and-quantity distribution of a style; a minimum order specifies the lowest purchasing requirement for placing an order. A business may apply these rules together or separately.

Which size run should I choose when opening a new boutique?

There is no single ideal pack. Consider your target customers, product categories, sales channels and working capital or inventory capacity together. Where possible, start with a small, manageable selection, gather real sales data and use it to guide future orders.

Conclusion: make size-run details part of your inventory plan

In wholesale clothing, a size run is more than a group of different sizes: it is an ordering structure that directly affects purchasing, inventory and sales planning. Rather than assuming what is included, confirm the sizes and quantities for every style, compare them with your sales data and clarify the minimum order terms separately.

Standards note: The ISO 8559 family of standards addresses the use of body measurements in clothing size designation. A “size run”, by contrast, is a wholesale ordering and distribution practice, so its composition can vary by seller and style.