Metas No Unknown – Product Liability Lawyer

2026-02-25 – A consumer suffered severe foot burns after a Metas No Unknown heated insole spontaneously caught fire while not in use, according to a report filed with the U.S. Consumer Product Safety Commission's SaferProducts.gov database. The incident, classified as a fire or burn hazard involving a manufacturing defect, resulted in hospital admission. The product was purchased through Amazon.

Product Details

Brand Name: Metas No Unknown
Manufacturer: METASONO-US
Retailer: Amazon
Incident Report Number: 5878943
Severity Type Name: Hospital Admission

Incident Overview

According to the incident report filed on February 5, 2026, the consumer's heated insole caught fire while the product was not turned on. The device was not in use at the time of the incident. The consumer suffered severe burning to the foot, requiring hospital admission. The report does not specify the model number or the exact circumstances leading up to the fire.

The incident highlights a dangerous failure mode: spontaneous combustion of a battery-powered wearable device while idle. The product was purchased from Amazon, but the report does not indicate whether the consumer had used the insole previously or how long it had been in their possession. The reporter retained the product for investigation, according to the CPSC record.

Safety Concerns

Immediate Dangers: The sudden ignition of a heated insole while not in use poses a direct fire and burn hazard to the user. In this case, the consumer suffered severe burns requiring hospital admission, demonstrating the potential for serious injury.

Long-Term Risks: Continued use of a defective heated insole may lead to recurring fire incidents, especially if the underlying manufacturing defect is not addressed. Even if a unit appears functional, internal flaws can cause failure at any time.

Who Might Be Affected: The user of the product is at primary risk, but bystanders and property are also endangered. A fire starting in a shoe or near bedding could spread rapidly, endangering others in the home.

Warning Signs: Unlike some battery failures that produce heat or swelling before ignition, this incident occurred without warning while the device was off. Consumers should be alert to any unusual odors, heat, or deformation, but absence of these signs does not guarantee safety.

What Our Clients Say

What Consumers Should Do

Stop Using Immediately: Discontinue use of the Metas No Unknown heated insole and any similar devices from the same manufacturer until the cause of the fire is determined and a recall or safety notice is issued.

Preserve the Product: Keep the insole in a safe, non-flammable location. Do not discard or attempt to repair it, as it may be needed for investigation or evidence in a potential legal claim.

Document the Incident: Take photographs of the damaged product and any injuries. Keep records of medical treatment, receipts, and communications with the manufacturer or retailer.

Seek Medical Attention: If you have suffered burns or other injuries from a heated insole, seek medical evaluation immediately. Burns can be more severe than they initially appear.

Report to the CPSC: File a report on SaferProducts.gov if you experience a similar issue. This helps regulators identify dangerous products and take action.

Check for Recalls: Monitor CPSC.gov and the manufacturer's website for any recall announcements related to Metas No Unknown heated insoles.

If you have been injured or suffered property damage from this product, you may wish to consult a product liability attorney to discuss your legal options.

Manufacturer's Response

The manufacturer's official response to this specific incident report is not publicly available at the time of this writing. For updates, consumers can monitor the CPSC report at https://www.saferproducts.gov/PublicSearch/Detail?ReportId=5878943.

Legal Help Available

H Law Group is a California-based product liability law firm representing individuals injured by defective products. We handle cases on a contingency fee basis, meaning there is no upfront cost to you. We offer free consultations to discuss your case. If you or a loved one was injured by Metas No Unknown or a similar product, contact H Law Group at (888) 499-4948 for a free, no-obligation consultation.