Knoll · Office Chairs
Knoll Ollo Chair
Lower PFAS concern for core structure, but limited transparency on upholstery treatments.
The Knoll Ollo is a modern lounge chair with a rigid molded-plastic body and foam/fabric cushion. Knoll makes no public PFAS disclosures about this product.
Shop Knoll on Amazon →Material
molded plastic shell, upholstered seat; aluminum base
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
furniture is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
The Ollo's shell is injection-molded polypropylene or similar thermoplastic, a chemically stable material with no known leaching concerns under normal office conditions. The upholstered seat typically uses polyurethane foam and woven synthetic fabric or leather; neither introduces established heavy metal or formaldehyde risks if sourced to basic standards. The aluminum base is anodized, which prevents aluminum leaching into air or skin contact. Overall material composition poses no acute toxicity hazard from the plastic or metal components themselves.
The brand's record and disclosure
Knoll is a publicly held, ISO 14001 certified furniture manufacturer with a stated environmental commitment, but does not publish detailed chemical disclosures for individual products or PFAS use in fabric treatments. The company has no publicized recalls for toxic outgassing, lead, or cadmium in this product line. Absence of negative news does not confirm comprehensive third-party testing; Knoll's silence on PFAS in upholstery treatments reflects a broader industry norm of non-disclosure rather than an outlier red flag.
How it compares in its category
The Ollo sits in the mid-to-premium office chair segment. Compared to budget plastic chairs with unknown sourcing or vintage leather chairs that may contain cadmium or lead in dyes, the Ollo's thermoplastic shell and contemporary upholstery materials present lower known toxicity risk. Many competitors in this price range (Herman Miller, Steelcase) also withhold PFAS transparency, making Knoll's stance typical rather than exceptional or worse.
If you buy it
Use the chair in normal office environments (no prolonged heat, direct sunlight, or chemical exposure that would degrade plastic). Air out the seat foam for 24-48 hours after delivery to reduce any initial off-gassing from polyurethane, though acute VOC hazard is minimal. Check fabric periodically for pilling or wear; replacement covers are available from Knoll. Clean with mild soap and water; avoid solvents that could stress the plastic shell.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Polyurethane foam off-gassing (VOC/formaldehyde releasers)
Upholstered foam seats can emit volatile organic compounds and formaldehyde-based binders for weeks to months after manufacturing. The Ollo is a new commercial product so initial off-gassing is expected but typically mild for mainstream office furniture. Airing the chair reduces this exposure.
Synthetic fabric dye contamination (heavy metals in pigments)
No recalls or public complaints document lead, cadmium, or antimony in Knoll Ollo upholstery. Commercial fabric suppliers to Knoll typically meet OEKO-TEX or similar dye standards, but Knoll does not publicly confirm testing.
Teflon-type coating or Teflon-family coating coatings (fume risk if overheated)
Thermoplastic polyolefins like polypropylene used in the shell do not contain Teflon-type coating. No evidence the Ollo uses Teflon-family coating or non-stick coatings that would create fume hazard under normal use or light heat.
Plastic shell degradation and microplastic shedding
Molded polypropylene can become brittle and crack after 5-10 years of use, particularly in dry indoor environments or if exposed to prolonged UV light. Micro-cracking is cosmetic risk and indoor air quality risk rather than acute toxicity, but may warrant replacement.
PFAS in water-resistant or stain-resistant fabric treatment
Knoll does not disclose whether the Ollo upholstery includes PFAS-based water repellents (common in commercial furniture textiles). Industry-wide, many office chair makers treat fabrics with per- and polyfluoroalkyl compounds to meet durability specs; Knoll's silence suggests possible but unconfirmed use.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% 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.
More office chairs 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.