Spigen · Water-Resistant Smart Rings & Bands
Spigen Rugged Armor Band for Samsung Galaxy Watch 4/Watch Active 2/HUAWEI Watch GT
Lower concern. TPU bands rarely require PFAS treatment.
Spigen rugged armor bands are typically thermoplastic polyurethane elastomer, a material not inherently linked to PFAS. No waterproofing claims or PFAS disclosures appear in public product information.
The better-graded swap
Even Realities
Even R1 Smart Ring
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Thermoplastic polyurethane (TPU) elastomer band
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Azo dye toxicity (if dyed)
If the band is pigmented or dyed (e.g., black, colored finishes), azo dyes may be present. Color bleeding into skin during sweating is uncommon with quality TPU, but no manufacturer testing is publicly available for this specific product. Patch test on inner wrist if sensitive to dyes.
Contact dermatitis or allergic sensitization
Individual sensitivity to TPU or residual uncross-linked oligomers is rare but documented in some users. Symptoms (rash, itching under the band) typically appear within 1-2 weeks of continuous wear and resolve upon removal. No widespread recalls or complaints on record for Spigen or Skagen bands.
Degradation and microparticle shedding over time
After 2-3 years of daily wear, TPU can become tacky or brittle, particularly if exposed to chlorine, sunscreen, or intense UV. Shedding of small TPU particles is theoretically possible but ingestion risk is negligible for a wrist-worn item; replacement is recommended when visible wear occurs.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Phthalates
TPU can contain residual plasticizers, but no evidence of leaching at body temperature or in direct skin contact for this product class. Spigen and Skagen do not disclose plasticizer composition; standard TPU formulations used in medical-grade wearables suggest low or no phthalate content.
Source, ATSDR ↗Volatile organic compound (VOC) off-gassing
TPU typically off-gasses minimally compared to silicone or PVC. Any odor detected out of the box is likely residual manufacturing solvents that dissipate within days of airing; this is not a chronic exposure hazard.
The full breakdown
What it's made of and why it matters
This band is thermoplastic polyurethane (TPU), a flexible synthetic polymer chosen for durability and skin-contact safety in wearables. TPU is non-porous, hypoallergenic relative to other elastomers, and does not require heavy chemical cross-linking like silicone or latex. The material itself resists degradation from sweat and UV exposure, which is why it's widely used in smartwatch bands. No evidence suggests TPU bands leach plasticizers or volatile compounds under normal wrist-temperature conditions.
The brand's record and disclosure
Note, This product is listed as Spigen brand but attributed to Skagen in your query; clarify which manufacturer applies. Spigen is known for transparent material specifications on watch bands and has no documented recalls or disclosure failures for elastomer bands. Skagen (a Fossil Group subsidiary) has not publicly disclosed PFAS or heavy-metal testing for watch bands. Neither brand has established third-party certifications (e.g., Oeko-Tex, GOTS) specific to watch band materials, which is typical for this product category.
How it compares in its category
TPU watch bands occupy the mid-safety tier, superior to dyed fabric or coated leather bands (which may contain azo dyes or formaldehyde-based finishes), comparable to silicone bands (both are inert elastomers), and less complex than metal or ceramic alternatives. TPU is less prone to bacterial colonization than fabric and does not off-gas VOCs as readily as some silicone formulations. This is a standard material for replacement bands across major smartwatch brands.
If you buy it
Wash the band weekly with soap and water to prevent sweat and bacteria accumulation; TPU tolerates routine cleaning without degradation. Avoid prolonged direct sunlight or heat above 80°C, which can soften TPU slightly over years of use. Inspect the band quarterly for visible cracks, discoloration, or stickiness; replace if the material feels oily or tacky (sign of plasticizer migration, though rare). Store in a cool, dry place away from oils and solvents.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Spigen has made none
Formulations change between production runs, so check the current label. How we grade.
More water-resistant smart rings & bands grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.