Direct answer
Plus size sock quality control should verify foot, ankle, calf, cuff and length dimensions; practical stretch and recovery; toe and interior finish; weight and appearance; wash change; and consistency against the approved sample. Compression products require additional pressure verification.
Key Takeaways
- Inspect by zone, not only total length.
- Measure practical stretch and recovery.
- Use the approved sample as the standard.
- Repeat measurements after washing.
- Add pressure tests for compression products.
Create a measurable inspection specification
The approved sample should be supported by a written table of dimensions and tolerances. For plus size socks, total length and foot length are not enough.
Include foot width or circumference, ankle, calf body, cuff opening and vertical leg length. Record the method and equipment so factory and buyer measure in the same way.
Check stretch and recovery
A product may meet flat dimensions while feeling too tight at practical extension. It may also stretch correctly once but fail to recover after wear.
Use a defined extension method, holding time and recovery period. Compare samples from different positions in the production lot.
- Relaxed dimension.
- Recommended fit extension.
- Maximum test extension where relevant.
- Dimension after recovery.
- Dimension after wash.
Inspect construction and appearance
Review toe closure, loose yarns, holes, oil marks, uneven knitting, cuff ribs, heel position and pattern alignment. Turn samples inside out to identify rough areas or long floats.
For graphics, inspect both flat and stretched appearance. Compare shade under consistent lighting and retain an approved color reference.
Use wash testing before and during production
Wash testing can reveal shrinkage, color change, pilling and loss of elasticity. Use the care method that will appear on the consumer label.
When a bulk order uses a new yarn lot, dye lot or finishing adjustment, repeat critical checks. Keep records so future repeat orders can be compared.
Buyer questions
Frequently Asked Questions
What dimensions should be inspected on wide calf socks?
Foot length, foot circumference, ankle, calf body, cuff opening and sock height should be included.
Why test recovery?
Recovery shows whether the sock can return toward its intended shape after being stretched during wear.
Is visual inspection enough for compression socks?
No. Compression products also require appropriate pressure verification and documentation.