Inventory management for Shopify sock brands

The inventory problems sock brands run into

• Size curve imbalance. A crew sock style might sell mostly in size M and L, but if you order evenly across S-XL you end up overstocked on slow sizes and out of the sizes that actually move.
• Color and pattern proliferation. Limited edition colorways and seasonal prints multiply SKU count fast, and each one needs its own reorder math even though sales history is thin.
• Thin per-variant sales data. A single sock style spread across 5 sizes and 6 colors means each SKU might only sell a few units a week, making demand hard to read without looking at the parent style too.
• Multi-pack and single-pair SKUs. Many brands sell the same sock as a single pair and as a 3-pack or 6-pack bundle, which splits demand across different SKUs for what is really one product.
• Supplier minimums per colorway. Knit suppliers often set minimums per color or per size run, not just per order, which forces you to buy more of a slow color just to hit the minimum.

Seasonality and demand

Sock sales follow clear calendar patterns. Wool and thermal socks peak in late fall through winter, lightweight and ankle socks peak in spring and summer, and novelty or holiday-themed socks spike hard around Christmas and then stop selling almost completely in January. Back-to-school in late summer can lift basic crew sock sales too. Plan reorders for winter and holiday styles in mid to late summer so stock lands before demand starts, and plan markdowns or reduced reorders for holiday novelty prints well before the season ends since they do not carry over well to next year.

Suppliers, lead times and minimums

Sock brands typically work with knitting mills, either domestic or overseas. Domestic mills tend to offer faster turnaround but higher per-unit cost and often still require minimums per style and color. Overseas mills usually have lower unit cost but longer lead times, and lead times often stretch further around holidays in the supplier's home country. Case packs are common, often in units of 6 or 12 pairs per color per size, and minimums are frequently set per colorway rather than per overall order, so a small test color can require the same minimum as a core color.

Worked example

Say your brand sells a wool crew sock in size L, and that SKU averages 4 pairs sold per day. Your mill's lead time is 20 days and you keep 5 safety days, so your reorder point is 4 x (20 + 5) = 100 pairs. You currently have 60 pairs on hand and 0 on order, which is below the reorder point, so it is time to order. You want 30 days of cover on top of the lead time, so order quantity = 4 x (20 + 30) - (60 + 0) = 200 - 60 = 140 pairs. Since the mill packs in cases of 12, you would round up to 144 pairs to place the order.

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 SKU by style, size, and color, not just by parent style.
2. Pull daily sales rate per SKU for at least the last few weeks, adjusted for any recent stockouts.
3. Confirm each supplier's current lead time and case pack size, including any per-color minimums.
4. Set safety days higher for overseas mills and lower for domestic ones.
5. Flag seasonal styles now and schedule their reorder windows months ahead of peak season.
6. Review holiday and novelty prints after the season to decide what to reorder, discontinue, or clear out.

How SteadyShelf fits sock brands

SteadyShelf tracks forecasts and reorder points at the individual SKU level, so it handles the size and color split that makes sock inventory hard to manage by hand, and it rounds suggested orders to your supplier's case packs and minimums. It does not track bundles, so if you sell the same sock as a single pair and as a multi-pack, you will need to manage the relationship between those SKUs yourself. It also does not do multi-location transfers, so if you stock a warehouse and a retail location separately, you will need another method to balance stock between them.

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

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