Kirkland Signature · Fast Food Wrappers
Signature Food Wrap Stretch-Tite Premium
Avoid since standard food wrap likely treated with fluorinated polymer and Kirkland offers no PFAS disclosure or testing.
Kirkland's Stretch Tite Premium is a conventional cling wrap offering no public disclosure about PFAS use or content. Food-contact films in this category are often coated with fluorinated compounds for grease resistance and cling properties.
The better-graded swap
If You Care
If You Care Parchment Baking Paper
90/100 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
polyethylene film with unknown moisture/grease barrier coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Signature Food Wrap Stretch-Tite Premium is made of, ingredients and materials
Stretch-Tite Premium is a polyethylene film designed for food wrapping with an undisclosed moisture and grease barrier coating. Standard food wraps in this category typically use fluorinated polymers (Teflon-type coating-based or similar fluorocarbon treatments) to achieve the non-stick, moisture-resistant properties consumers expect. Kirkland has not published the chemical identity of this barrier layer, which is the primary source of PFAS concern in this product category. The polyethylene base itself is stable at room temperature, but the coating composition remains opaque.
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.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Fluorinated polymer barrier coatings (food-contact surface)
Undisclosed barrier treatment in polyethylene food wrap is standard industry practice and typically fluorine-based to achieve grease and moisture resistance. Without manufacturer confirmation of PFAS-free status, this is a foreseeable chemical hazard in the product design.
Plastic migration under heat or extended contact
Any barrier coating or polyethylene can migrate oligomers into fatty or acidic foods if the wrap is heated or used for prolonged contact. Kirkland provides no temperature-use guidance, leaving consumers uncertain about safe heat exposure limits.
Microplastic or coating fragment shedding during use
Stretching, tearing, or rough handling of thin film wraps can generate polymer fragments or coating particles that may transfer to food. No quality assurance data for this specific product is publicly available.
Cumulative exposure through repeated use
Household use of unverified food wrap for frequent food storage represents low-level but chronic contact with an unknown fluorinated coating. Bulk purchasing from Costco may encourage higher frequency of use without awareness of composition.
Lack of ingredient transparency
Kirkland does not itemize barrier coating chemistry on packaging or in public documentation, creating an information asymmetry between manufacturer knowledge and consumer choice. This is a documented industry-wide gap, not unique to Kirkland, but remains a material safety concern.
How is this PFAS grade calculated?
The brand's record and disclosure
Kirkland Signature (Costco's house brand) maintains minimal public disclosure on chemical composition of food contact materials and has made no public statements regarding PFAS testing or avoidance in plastic wraps. The brand does not advertise PFAS-free status or independent certifications for this product line. This silence contrasts with a small number of competitors who have voluntarily moved to PFAS-free alternatives or provided transparency statements. No recalls or documented safety incidents specific to this wrap product are on record, but lack of disclosure is itself a transparency gap.
How it compares in its category
Most mainstream food wrap brands (Glad, Saran, generic store brands) have similar unspecified barrier coatings and do not disclose PFAS status. A growing segment of competitors explicitly market PFAS-free formulations (e.g., some Glad products, specialty eco-brands) with third-party verification. Kirkland's Premium variant suggests upgrading within the same opacity problem rather than solving it. The price advantage of bulk Costco purchasing is offset by the inability to verify what coating technology is actually used.
If you buy it
Do not heat this wrap in microwave or direct contact with hot foods, as this may increase migration from the barrier coating. Use for cold storage, room-temperature leftovers, and dry goods only. Replace immediately if film becomes cloudy, brittle, or shows visible degradation, as coating breakdown can increase leaching risk. For food that requires wrap protection during heating, switch to labeled microwave-safe containers or uncoated parchment paper; do not assume this product is heat-safe without explicit labeling.
What is not known about PFAS in this product?
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Kirkland Signature has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Signature Food Wrap Stretch-Tite Premium?
- silicone-coated parchment paper
- The brand calls it PFAS-free, which we have not verified
- Silicone coating degradation at extreme heat
2 hazards checked on this product, all on its full breakdown.
- Polyethylene (PE) film
- We found no PFAS statement from the brand
- Polyethylene film degradation under heat
2 hazards checked on this product, all on its full breakdown.
- Aluminum foil, uncoated
- Aluminum leaching (acidic/salt contact)
3 hazards checked on this product, all on its full breakdown.
More fast food wrappers 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.