Inventory management for Shopify streetwear brands

The inventory problems streetwear brands run into

• Size curve imbalance. a graphic tee might sell 5x more in M and L than in XS and XXL, but suppliers often want you to order a flat case pack across sizes.
• Drop-based demand, not steady demand. sales spike hard in the first 48 hours of a drop then trail off, which breaks simple daily-average forecasting if you don't account for it.
• Colorway and print run variants. limited colorways create dozens of SKUs from one style, and some of those SKUs will never restock once the run sells out.
• Long overseas production lead times. cut-and-sew or screen print runs from overseas factories often take several weeks to a couple of months, so you have to commit to quantities long before you know if a design is a hit.
• Collab and license deadlines. collab pieces often have a hard sell-by or event date, so ordering late isn't just a stockout, it can mean the product is irrelevant by the time it lands.

Seasonality and demand

Streetwear demand clusters around drop calendars more than calendar seasons. Hoodies and heavier fleece spike in fall and winter, tees and shorts spike in spring and summer, but the bigger driver is your own release schedule: a sneaker collab, holiday capsule, or anniversary drop can outsell your normal month in a day. Plan backward from drop dates. If a drop is set for a specific day, your order-by date needs to account for production lead time plus a buffer for shipping delays, not just typical lead time. Build extra safety stock ahead of known collab or holiday drops, and plan for a hard drop-off in sales on staple items right after a new drop launches, since attention shifts to the new release.

Suppliers, lead times and minimums

Streetwear brands usually work with one of three supplier types: domestic cut-and-sew manufacturers, overseas garment factories, or blank apparel wholesalers you screen print or embroider yourself. Domestic cut-and-sew shops tend to have shorter lead times but higher per-unit costs and often require minimums per style and per colorway. Overseas factories usually have lower unit costs but longer lead times and higher MOQs, often requiring a minimum per color per size run. Blank wholesalers (for in-house printing) tend to have the fastest turnaround and lowest minimums, sold in case packs by size. Case packs and per-color minimums both affect what quantities you can realistically order, so your reorder quantities need to round up to match them, not just match raw demand.

Worked example

Say you sell a mid-weight hoodie, size L, black colorway, averaging 4 units a day. Your overseas factory's lead time is 35 days, and you keep 7 safety days on hardgoods for shipping delays. Reorder point = 4 x (35 + 7) = 168 units. You currently have 60 on hand and 0 on order, and you want 45 days of cover. Order qty = 4 x (35 + 45) - (60 + 0) = 320 - 60 = 260 units. If the factory's case pack for that size and color is 24, you'd round up to 264 units.

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 active SKU by style, colorway, and size, not just by style.
2. Set a lead time and safety day buffer per supplier, since domestic and overseas lead times differ a lot.
3. Mark which SKUs are limited runs that will not be reordered, so forecasting doesn't try to reorder dead colorways.
4. Build your drop calendar first, then work backward to set order-by dates for each drop.
5. Confirm each supplier's case pack and per-color minimum before you set your default order quantities.
6. Review your weekly reorder email against upcoming drop dates, not just current stock levels.

How SteadyShelf fits streetwear brands

SteadyShelf forecasts each style and colorway and size variant separately and gives you an order-by date based on your supplier's lead time, which helps you commit to production before a drop without guessing. It rounds suggested order quantities to your supplier's case packs and minimums, and drafts and emails the PO once you approve it. It does not do manufacturing or BOM planning, so if your hoodie requires fabric sourcing and cut-and-sew steps tracked separately, you'll still need a separate system or spreadsheet for that production chain.

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

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