Direct answer
For B2B sourcing, 15-20 mmHg and 20-30 mmHg identify different pressure ranges and should be developed, tested and labeled as separate products. The appropriate range depends on the intended use, destination-market rules and qualified professional guidance where medical use is involved. A buyer should verify pressure at defined positions on every size, review donning difficulty and confirm that wide-calf grading does not weaken or concentrate pressure.
Key Takeaways
- Treat each pressure range as a separate verified construction.
- Do not infer pressure from yarn tightness or appearance.
- Check every size across its approved measurement range.
- Review claims and labeling for each destination market.
Understand what the pressure range represents
The stated mmHg range describes measured pressure under defined conditions. It does not tell the buyer everything about comfort, fit or suitability, and it cannot be established by touch. Test method, leg form, measurement points and tolerances must be agreed.
Pressure should generally be highest near the ankle in a graduated design and reduce up the leg according to the approved profile. The exact construction and claims need qualified review.
- Specify the target range and gradient.
- Name the test method and measurement positions.
- Define size-specific tolerances.
- Keep medical-use decisions outside marketing copy.
Compare product-development requirements
A higher target pressure may require different elastomer input, knit density and shaping. It can also affect donning, especially for users with large calves, fuller ankles or reduced hand strength. Development should balance measured performance with practical use.
Do not create a second pressure range by changing only a label. Build and approve physical samples for each construction, then test the complete size set.
- Review yarn and elastomer specifications.
- Run donning and removal trials.
- Check cuff comfort and ankle wrinkles.
- Repeat testing after wash and finishing.
Position each range responsibly
Retail positioning should describe verified product features without implying treatment outcomes that are not supported or permitted. Instructions should direct customers to appropriate professional advice when health conditions or medical use are involved.
For wholesale programs, align product name, package, online listing and carton labels. Avoid mixing pressure ranges under one SKU or using ambiguous terms such as medical grade without evidence and regulatory review.
- Use the verified numerical range consistently.
- Separate SKUs and packaging for different pressure levels.
- Include measurement and fitting instructions.
- Review local device and labeling requirements.
Approve the final wide-calf product
Approval should combine pressure data with dimensions, wearer fit, wash performance and production controls. A passing base size is not evidence for all extended sizes.
Keep reports, tested samples and lot references together. This makes repeat orders and customer questions easier to manage and reduces the risk of unsupported claims.
- Test every offered size.
- Check minimum and maximum approved circumferences.
- Retain pre-production and bulk samples.
- Audit packaging against the final report.
Buyer questions
Frequently Asked Questions
Is 20-30 mmHg simply tighter than 15-20 mmHg?
It is a different measured pressure range, not a subjective tightness description. Construction, fit and verified testing determine the result.
Can the same wide-calf size chart be used for both ranges?
Only if both finished products have been developed and validated against that chart. Different constructions may require different fitting guidance.
Which pressure range should a customer wear?
That decision can depend on intended use and individual health circumstances. Customers should follow product instructions and qualified professional guidance where appropriate.