Inventory by store type

Inventory management for Shopify activewear brands

Activewear brands live and die by size and color grids. Running out of size M in black leggings while size XS in coral sits full is a stockout and a markdown problem at the same time.

The inventory problems activewear brands run into

  • Size curve imbalance. Demand is rarely even across a size run. Mid sizes sell faster, so you can be out of M and XL while still holding S and XXL, which looks like full stock in a total count but isn't.
  • Color and print cycles. Seasonal colorways and limited prints create short selling windows. Reordering a discontinued print is pointless, but reordering a core black or nude too late means missed sales for weeks.
  • Fabric and fit variations across styles. Leggings, sports bras, and shorts each have their own size logic and supplier, so one style's reorder timing tells you nothing about another's.
  • Performance fabric lead times. Technical fabrics (compression, moisture-wicking blends) often come from a smaller pool of mills, so remakes or reorders in the same fabric can take longer than a simple restock of a basic tee.
  • Multi-SKU bundles sold as sets. Matching sets (bra plus legging) sell as a pair in marketing even when inventoried as separate SKUs, so one component running out effectively stops both from selling.

Seasonality and demand

Activewear has two clear peaks: January (New Year fitness resolutions) and late summer into fall (back-to-school and new routines). Many brands also see a secondary lift around major fitness challenges or influencer launches. Holiday gifting adds a smaller bump for accessories and loungewear crossover pieces. Plan size curves and core colors to be fully stocked before January 1 and before early September, since lead times mean orders placed in December for a January peak are often too late. Limited edition colorways should be ordered tighter and closer to launch, since leftover stock after the marketing push loses most of its appeal.

Suppliers, lead times and minimums

Activewear brands typically source from overseas cut-and-sew factories (often Asia) for core styles, sometimes paired with a domestic cut-and-sew shop for small-batch or limited drops. Overseas suppliers often take several weeks for production plus shipping, and many require minimums per style and color, sometimes per size within that color. Domestic manufacturers usually have shorter turnarounds but higher per-unit costs and still enforce minimums per cut. Trims, fabric, and private-label packaging may come from separate suppliers with their own lead times, which matters if you are developing new styles rather than reordering existing ones.

Worked example

Suppose your black high-waist legging in size M sells 3 units a day on average. Your overseas factory has a 35-day lead time, and you keep 10 safety days for shipping delays. Reorder point = 3 x (35 + 10) = 135 units, so you place an order when stock on hand plus on order drops to 135. If you want 45 days of cover after the new stock lands, order quantity = 3 x (35 + 45) minus (current on hand of 80 plus 0 on order) = 240 - 80 = 160 units. Your factory's case pack is 20 per size per color, so 160 rounds cleanly with no leftover to adjust.

Try it with your own numbers in the reorder point calculator, or size your buffer with the safety stock calculator.

A simple system to start this week

  1. List every style, color, and size as its own variant with its own sales history, not grouped by style alone.
  2. Set a lead time and safety days per supplier, separating overseas cut-and-sew from any domestic shop you use.
  3. Flag limited edition colors so they are not auto-reordered after the selling window closes.
  4. Review the size curve per style each season and adjust reorder quantities per size, not just per style total.
  5. Confirm case pack and minimum quantities per size and color with each supplier before approving a draft PO.
  6. Check component balance on matching sets (bra and legging pairs) so one piece running out doesn't strand the other.

How SteadyShelf fits activewear brands

SteadyShelf forecasts each size and color variant separately, so it catches a size M stockout even when total units look fine, and it rounds order quantities to your supplier's case packs and minimums. It will flag an order-by date per SKU and draft the PO for approval, but it won't manage multi-location transfers if you stock a warehouse and a retail store separately, and it won't track fabric lot or dye batch details, since that's not something it monitors. For dye-lot matching or wholesale allocation across locations, you will still need a manual process alongside it.

$29/month flat, unlimited products and suppliers, 30-day free trial.

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More: inventory management by store type · inventory glossary · Stocky alternatives

FAQ

Does SteadyShelf account for size curves automatically?

It forecasts each size and color as its own variant based on that variant's own sales history, so if M sells faster than XS, the forecast and reorder point for M will reflect that. You don't need to manually split a style-level number into sizes yourself.

Can it handle limited edition or seasonal colorways that won't be restocked?

You can mark those variants so they are excluded from weekly reorder suggestions once the color is discontinued. SteadyShelf won't know a color is limited on its own, so this flag needs to be set by you when you launch the style.

What about matching sets, like a bra and legging sold as an outfit?

SteadyShelf tracks each SKU separately, including the bra and legging that make up a set, and gives each its own reorder point and order-by date. It does not manage bundles as a single sellable unit, so if you sell the set as its own listing, you'll need to watch that both components stay in stock yourself.

Let SteadyShelf do this math for every SKU

Order-by dates per supplier, seasonal forecasts and draft POs for your Shopify store. $29/month after a 30-day free trial.

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