PFAS score
Robens · Tents
Robens Cobra Stone 5 Tent
Skip unless Robens discloses their waterproof treatment chemistry.
The Robens Cobra Stone 5 is a tent with polyester fabric and waterproof coating, but Robens does not publicly disclose whether the water-repellent coating treatment contains PFAS. Industry standard for tents historically involves fluorocarbon-based coatings.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyester fabric with waterproof/water-repellent coating (type unspecified)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Tents
Khyam
6-Person Khaki Waterproof Windproof Easy Setup, Double Layer Family Camping Tent with 1 Mesh Door & 5 Large Mesh Windows
Polyester fabric with unspecified waterproof/windproof coating
Skip until brand discloses waterproofing chemistry.
⚠Waterproof or stain-proof treatment
More tents 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.