Wetsuit colorfastness testing should answer two different questions: does the suit’s own color change, and does color transfer onto another material? Choose the exposure that matches the complaint, then check the exact sample, separate results and agreed limits. A dry-rubbing pass cannot approve wet rubbing, seawater exposure or every color in a range. [1][2]
Color change and staining: what is the difference?
Color change happens to the sample itself. Compare its shade before and after the specified exposure. Fading is one visible form of change. ISO 105-A02 covers the grey scale used to assess this outcome. [3]
Staining happens to another material. Look for transferred color on the specified contact fabric. ISO 105-A03 covers the grey scale for assessing that staining. A suit can look much the same while leaving color on a light contact material, so one observation does not replace the other. [4]
AI-generated concept illustration, not a before-and-after test or a measured result. The unmarked white cloth is a visual reference. View full size.
Which wetsuit colorfastness testing fits your concern?
Start with what happened: a mark after rubbing, a shade change after sea use, or a pool-related complaint. “Neoprene color bleeding” is a useful description of a problem, but it does not identify the affected layer or select a test.
| Your concern | Discuss with the lab | Keep this boundary |
|---|---|---|
| Color rubs onto dry contact fabric | Dry rubbing under ISO 105-X12:2016. [1] | A dry result does not establish wet performance. |
| Color transfers during wet rubbing | Wet rubbing under ISO 105-X12:2016. [1] | Wet rubbing is not seawater immersion. |
| Color problems after sea exposure | Sea-water colorfastness under ISO 105-E02:2013. [2] | It does not approve chlorine exposure or seam strength. |
| Color changes after pool exposure | Chlorinated-water colorfastness under ISO 105-E03:2010. [5] | Color resistance alone does not establish whole-suit durability. |
These are method-scope references, not home-test instructions or universal requirements. The lab should confirm applicability to the specimen and the agreed edition.
For a pool-use range, also review the foam, bonded layers, seams and closures. Our guide to chlorine and wetsuit use explains why a color result answers only part of that question.
Was the material you are buying actually tested?
A report for plain face fabric does not automatically approve a printed, laminated panel. Before reading the grade, match the sample description to the item being approved. Is it the outer fabric, inner lining, coating, print, complete bonded panel or finished garment?
AI-generated material illustration, not INSEAKU sample photography. Layers and print are generic; no thickness or performance is specified. View full size.
Ask for a sample ID and photograph linked to the color reference, batch and construction. Identify the tested face and print area; retain the reported direction and any preparation or deviations. “Blue neoprene” is too vague to distinguish a navy outer face from a blue inner lining.
For printed samples, record the print process and revision as well as the artwork color. Use our wetsuit logo printing and approval guide for those choices, and the wetsuit material selection guide for the complete layer construction.
How to read a report before approving a sample
Read the sample, method, result and acceptance limit together. A document headed “colorfastness” with a single “pass” does not tell you which exposure or outcome was accepted.
A buyer wants a cream print on navy laminated wetsuit material. The fictional submission below is incomplete; no measured grades or test results are supplied.
| Example field | What to ask for | Why it matters |
|---|---|---|
| Sample: “navy face fabric” | ID/photo linking the test to the printed laminate. | The submitted description does not cover the intended construction. |
| Method: “rubbing” | Standard and edition; dry or wet condition. | Different conditions cannot be treated as the same result. |
| Result: “pass” | Reported grade for each applicable condition and assessed material. | A summary hides what was assessed and how it performed. |
| Acceptance limit: not supplied | The agreed requirement and its specification reference. | The buyer cannot judge conformity to an unstated limit. |
Decision for this example: request the missing evidence before approving the printed laminate. The incomplete submission is not proof that the material failed. Keep the report ID, date and relevant pages together when the complete report arrives.
What do the colorfastness grades mean?
For the grey-scale assessments discussed here, grades generally run from 1 (poorest) to 5 (best). Keep color-change and staining grades separate, and check which condition each grade belongs to. KAFTI explains the two assessments and their grading direction. [6]
Scale direction only. Intermediate grades may be reported; this is not a calibrated grey scale or a set of sample results.
Grade 4 is not an automatic rule for every wetsuit. Agree the required outcome, method, conditions and minimum grade with the buyer and lab before testing. Do not average a weak wet-rub result with a strong dry-rub result to conceal a missed requirement.
What does your approval cover?
Record the approved sample and report against the exact material, color, print revision and batch scope. If the color, dyeing route, coating, print or supplier changes, ask whether the earlier evidence still applies. One tested navy sample should not silently approve every color in the collection.
Shade matching and colorfastness answer different questions. A bulk panel can match the approved shade on arrival yet lack evidence for its behavior after exposure. Preserve both the approved color reference and the relevant test evidence.
Does wet rubbing cover staining in a packed bag?
No: prolonged contact in storage is a different situation. AATCC TM163 addresses dye transfer between contacting garment materials during storage, including the influence of moisture. If a dark panel stains a light panel while packed, describe that contact and storage condition to the lab rather than relying only on a rubbing report. [7]
Preparing a wetsuit sample brief? Send the material or print reference, intended use and the specific color concern when discussing INSEAKU’s development services. Agree the testing scope, laboratory, acceptance criteria and cost before commissioning work.
Sources and further reading
Reviewed 12 October 2026. ISO/AATCC public descriptions support method scope; this article does not reproduce the full standards or certify any wetsuit.
- ISO 105-X12:2016 — Colour fastness to rubbing. Dry and wet rubbing; published, under systematic review when checked.
- ISO 105-E02:2013 — Colour fastness to sea water. Immersion exposure.
- ISO 105-A02:1993 — Grey scale for assessing change in colour. Sample color-change assessment.
- ISO 105-A03:2019 — Grey scale for assessing staining. Staining of adjacent fabrics.
- ISO 105-E03:2010 — Colour fastness to chlorinated water. Swimming-pool water color exposure.
- KAFTI — Textile Colorfastness Testing Guide. Outcomes and grey-scale grading direction.
- AATCC TM163 — Colorfastness to Storage: Dye Transfer. Contact staining during storage.