Dennis Uniform Review, Is Dennis Uniform Non-Toxic?
Across 4 graded products, Dennis Uniform averages Good (54/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade Good or better yet. Grades are model-based estimates, not lab results.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Graded and flagged Poor and Bad, we’d swap these
Dennis Uniform
short sleeve jersey polo red YS Juniors AS (5-6) school
cotton or cotton-polyester blend jersey knit
Azo dyes and color fastness
Red dyes in children's apparel can include azo compounds; Dennis Uniform provides no dye…
Formaldehyde / VOCs
Cotton-polyester blends sometimes receive formaldehyde-releasing resins for wrinkle…
Allergenic fiber or dye sensitivity
Children with sensitive skin or dye allergies may react to untested dye batches or…
School polo with no disclosed treatment.
⚠Starting grade for this product type
Dennis Uniform
Dennis Girls School Uniforms Lot Of 3
school uniform fabric, likely cotton blend or polyester
Formaldehyde / VOCs
School uniform fabrics may be treated with formaldehyde-based resins for wrinkle…
Heavy metals
Darker-colored uniforms (navy, black) may use azo dyes or contain trace heavy metals…
VOC and off-gassing
New polyester-blend uniforms may release volatile organic compounds (VOCs) from sizing…
Lower concern; basic school uniforms without special coatings identified.
⚠Starting grade for this product type
Dennis Uniform
Boys Flat Front Stretch Twill Pants 049
cotton blend twill, no special treatment disclosed
Formaldehyde / VOCs
Cotton twill can be dyed with azo compounds or finished with formaldehyde-based resins to…
Antimony in polyester component
The stretch component (likely polyester or elastane) may contain antimony as a catalyst…
Elastic degradation and microfiber shedding
Waistband and cuff elastics in school uniform pants break down with repeated washing and…
Residual manufacturing chemicals (oils, lubricants, sizing agents)
Unwashed twill can contain trace amounts of processing oils and sizing agents from the…
Lower concern; basic twill pants with no treatments disclosed.
⚠Starting grade for this product type
Dennis Uniform
Boys Flat Front Tech Twill Pants
polyester twill with unspecified water-repellent coating/stain finish
PFAS
Tech twill pants almost certainly receive a water-repellent coating treatment; without…
Azo dyes
Polyester twill is often dyed with azo dyes, some of which can break down to release…
Antimony in polyester
Antimony oxide is a common polyester catalyst; while it remains bound in the polymer…
Formaldehyde / VOCs
Wrinkle-resistant and durability finishes on twill sometimes include formaldehyde-based…
Tech twill pants likely treated with water-repellent coating; brand silent on PFAS composition.
⚠Waterproof or stain-proof treatment
Dennis Uniform and PFAS, common questions
- Does Dennis Uniform have PFAS?
- We graded 4 Dennis Uniform products, averaging Good (54/100). None grade Good or better. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Dennis Uniform non-toxic?
- No Dennis Uniform product we graded reaches Good. The best of them is Dennis uniform short sleeve jersey polo red YS Juniors AS (5-6) school at 65/100.
- Which Dennis Uniform products should I avoid?
- The lowest-graded Dennis Uniform products we have scored are Boys Flat Front Tech Twill Pants, Boys Flat Front Stretch Twill Pants 049, Dennis Girls School Uniforms Lot Of 3. Each one links to the evidence behind its grade.
Every grade uses the same public rubric. How grades work →