Apparel is one of the hardest categories to fulfill well. One style becomes dozens of SKUs, neighboring sizes look identical on a shelf, and a quarter of online orders can come back. At 5,000 orders a month and up, the gap between an apparel-ready 3PL and a general one shows up in mispicks, oversells and returns that sit unprocessed for weeks.
An apparel fulfillment 3PL for a Shopify brand must store every size and color variant as its own scannable SKU, polybag and label units correctly (a suffocation warning on bags with a 5-inch or larger opening is Amazon's rule and a safe default), grade and restock returns quickly, since US online apparel returns run about 24% (Coresight Research, 2023), and pack mailers to avoid dimensional weight charges.
How many SKUs does an apparel catalog create?
Multiply styles by colors by sizes. A catalog of 40 styles in 4 colors and 6 sizes is 960 SKUs, and each one needs its own barcode, bin location and inventory count. Shopify now allows up to 2,048 variants per product, with up to three options, a limit raised from 100 in October 2025, so a single product page can carry far more SKUs than it used to.
| Example catalog | Styles | Colors per style | Sizes | Variant SKUs | Bin locations needed (1 per SKU, plus overflow for the top 20%) |
|---|---|---|---|---|---|
| Core basics | 15 | 3 | 6 | 270 | 324 |
| Seasonal drops | 40 | 4 | 6 | 960 | 1,152 |
| Extended sizes | 60 | 5 | 9 | 2,700 | 3,240 |
The bin count matters more than the unit count. A brand with 30,000 units across 2,700 SKUs needs far more shelf faces than a brand with the same units across 270 SKUs. When you size a warehouse or compare storage quotes, start from SKUs and bins. The warehouse space guide shows how to turn that into square feet.
How should a 3PL store and pick size and color variants?
One SKU per bin, a barcode on every unit, and a scan at pick and at pack. Size mix-ups are the most common apparel error because a medium and a large in the same polybag look the same to a picker.
- Never mix sizes or colors in one bin. Mixed bins turn every pick into a judgment call.
- Slot by velocity. Core sizes in your best colors go closest to the pack stations; the long tail of extended sizes and seasonal colors goes farther back.
- Barcode at the unit level. If your factory does not bag and label each unit, the 3PL must do it at receiving, and that work belongs in the quote.
- Sync by variant. Shopify sells each size and color separately, so inventory must sync per variant, in real time, or a sold-out size keeps selling.
- Plan for drops. A launch sends a burst of orders into a narrow set of SKUs. Ask how the 3PL staffs and slots for it, and read the peak season planning guide for the timeline.
Do apparel polybags need a suffocation warning?
In practice, yes. Amazon's bagging rules require a suffocation warning on any poly bag with an opening of 5 inches or more (measured flat), a bag at least 1.5 mil thick, and a scannable barcode through or on the bag. Amazon also notes that certain states and cities require the warning, so the same standard is a safe default for DTC orders.
Amazon's minimum print size for the warning scales with the bag:
| Bag length plus width | Minimum print size |
|---|---|
| 60 inches or more | 24 point |
| 40 to 59 inches | 18 point |
| 30 to 39 inches | 14 point |
| Less than 29 inches | 10 point |
The required text reads: "WARNING: To avoid danger of suffocation, keep this plastic film away from babies and children. Do not use this bag in cribs, beds, carriages, or play pens. This bag is not a toy." Buying bags with the warning printed is cheaper than labeling bags one at a time. Agree with your 3PL who supplies the bags, who checks the warning and who rebags units that arrive without one.
How high are apparel return rates?
Expect roughly one online apparel order in four to come back. Coresight Research estimated the US online apparel return rate at 24.4% for the 12 months to March 2023, with size and fit the top reason, cited by 53% of brands and retailers surveyed. Across all categories, the NRF and Happy Returns estimated in October 2025 that 19.3% of online sales would be returned that year, against 15.8% of all retail sales.
At Shopify volumes, that becomes a daily workload. The table uses the 24.4% rate, 22 working days a month and an example 80% of returns graded resellable.
| Orders a month | Returns a month | Returns per working day | Back to sellable stock (80% example) |
|---|---|---|---|
| 5,000 | 1,220 | 55 | 976 |
| 10,000 | 2,440 | 111 | 1,952 |
| 25,000 | 6,100 | 277 | 4,880 |
Speed has a direct cost. At 10,000 orders a month, a returns backlog of 10 working days instead of 3 holds about 780 extra returns off the shelf at any moment, often in the core sizes that sell out first. The cost of ecommerce returns article works through the per-return economics.
How should a 3PL grade apparel returns?
Grade every return against a written standard with photos, record the grade and reason in the system, and restock grade A units the same week. Grading is where most of a return's value is saved or lost.
| Grade | Condition | Typical action | What to record |
|---|---|---|---|
| A: resell as new | Unworn, no odor, tags on, no marks | Refold, new polybag, restock to the original SKU | RMA, reason code, grade, photo |
| B: resell after rework | Missing tag, creased, packaging damaged | Steam or press, retag, rebag, then restock or sell as open box | Rework done, time spent, photo |
| C: not resellable | Worn, stained, damaged, odor, wrong item returned | Hold for your decision: liquidate, donate, recycle or destroy | Photo, reason, disposition |
| Wrong or missing | Different item, empty package, item from another brand | Hold and flag for a fraud or customer service review | Photo of contents and label |
Write the standard yourself, with photos of each grade, and send it before go-live. Ask any 3PL for four commitments in writing: the time from receipt to restock, a photo record for each return, reason codes that flow back to Shopify or your returns app, and a weekly report of grade B and C units waiting for your decision.
How does dimensional weight affect apparel mailers?
Soft goods in poly mailers usually bill close to actual weight, while boxes often bill on size. UPS Daily Rates divide length by width by height by 139 for domestic dimensional weight on every package. USPS moved to the same 139 divisor on July 12, 2026, but applies dimensional weight only to parcels over 1 cubic foot (1,728 cubic inches).
The examples use list rules and illustrative packages. Negotiated contracts can change the divisor.
| Package | Size (inches) | Actual weight | UPS billable weight | USPS billable weight |
|---|---|---|---|---|
| T-shirt in a poly mailer | 13 x 10 x 1 | 0.4 lb | 1 lb | Actual weight (ounce pricing) |
| Hoodie in a poly mailer | 14 x 11 x 3 | 1.3 lb | 4 lb | 2 lb |
| Two hoodies in a box | 12 x 10 x 6 | 2.6 lb | 6 lb | 3 lb |
| Jacket and hoodie in a box | 16 x 12 x 10 | 4 lb | 14 lb | 14 lb |
Three habits keep the bill down. Use mailers for anything that cannot be crushed. Measure a filled mailer at its thickest point, because carriers measure soft packages as if they were boxes. Keep boxes for multi-item orders and structured items, and size them to the order instead of using one large box for everything. Ask a 3PL how it chooses the package for each order and how it bills postage, then read the quote line by line, as shown in what a 3PL quote looks like.
What should you ask an apparel 3PL before you sign?
Use this list in your first call. A 3PL that answers each point specifically has run apparel before.
- How many active SKUs do you support per brand, and do you store each SKU in its own bin?
- Is every unit scanned at pick and at pack, and what is your order accuracy rate, measured how?
- Who supplies polybags and suffocation warnings, and who labels units that arrive without a barcode?
- What is your time from return receipt to restock, in writing, and do you photograph each return?
- Can you follow our grading standard, and how are grade B and C units held and reported?
- How do you staff and slot for a product launch or limited drop?
- How do you choose mailers and box sizes, and how is postage billed?
- If we also sell wholesale, do you support EDI and retailer routing guides?
Where does Orderfy fit?
Orderfy is a tech-enabled, modern 3PL for high-volume Shopify and Amazon brands, and works with brands in apparel and footwear. The warehouse sits in the center of the US (Dallas-Fort Worth), so ground shipping reaches both coasts quickly without paying for air.
- Visibility: Orderfy's custom WMS, built in-house for Shopify and Amazon sellers, is included for clients and shows your inventory and products in one place, with order tracking at every stage.
- Shopify: the Shopify app is natively integrated, inventory syncs in real time, tracking reaches Shopify as soon as a label is created, and split shipments are supported.
- Accuracy: Orderfy tracks a 99.9% order accuracy rate in its in-house WMS.
- Launches and drops: Orderfy handles large surges, including product launches and limited drops, and each brand has dedicated staff who know its catalog.
- Receiving: same-day receiving puts new styles and restocks on sale sooner.
- Proof and access: photo records of shipments, and direct communication channels for 24/7 access to the warehouse team.
Orderfy is not the right fit for brands that ship only a few hundred orders a month, or for brands that need warehouses on both coasts. For returns grading, rework and packaging for your catalog, ask when you request a quote.
FAQ
Apparel fulfillment is the storage, picking, packing, shipping and returns processing of clothing orders. It differs from general fulfillment because of high SKU counts from sizes and colors, polybag and labeling rules, and return rates around 24% online.
Coresight Research estimated 24.4% for US online apparel in the 12 months to March 2023, with size and fit the top reason. For all online sales, NRF and Happy Returns estimated 19.3% for 2025. Your own rate depends on fit guidance, price point and return policy.
Most apparel 3PLs and Amazon expect each unit in a sealed polybag with a scannable barcode. Bags with a 5-inch or larger opening need a suffocation warning under Amazon's rules. If your factory does not bag and label units, expect the 3PL to charge for doing it at receiving.
Poly mailers suit most single-item soft goods because they bill close to actual weight. Boxes suit multi-item orders, structured items and premium unboxing, but they often bill on dimensional weight with UPS. Size the box to the order to limit the charge.
Up to 2,048 variants and three options per product, as of the October 2025 change. Each variant should have its own SKU and barcode so the 3PL can store, pick and count it separately.
Many can, but ask how. A good answer covers extra staff, slotting the drop SKUs near packing, receiving the stock early, and a written plan for the first 48 hours of orders.
A 3PL (third-party logistics provider) stores your inventory and picks, packs and ships your orders, usually connected directly to Shopify. The Shopify 3PL guide explains how the connection and costs work.
Sources
- Coresight Research, The true cost of apparel returns, April 4, 2023
- NRF and Happy Returns, consumers expected to return nearly $850 billion in 2025 (press release), October 15, 2025
- Amazon Seller Central, Bagging requirements, checked October 2026
- UPS 2026 Rate and Service Guide, U.S. Daily Rates, updated September 7, 2026, and UPS package dimensions and weight guide
- USPS, Domestic Competitive Products Pricing and Mailing Standards Changes, Federal Register, May 15, 2026, effective July 12, 2026
- Shopify Help Center, Adding variants, checked October 2026, and Shopify Changelog, product variant limit increased to 2,048, October 15, 2025
Get a quote
If you run an apparel brand on Shopify at 5,000 orders a month or more, get a quote and send your SKU count, monthly orders and return rate.