The U.S. Consumer Product Safety Commission has issued urgent warnings telling consumers to immediately stop using three brands of battery-powered heated insoles sold primarily through Amazon, citing a fire hazard that persists even when the products are turned off. The agency identified COOWALK/COOWALI, Meisinuo, and Junsyoung models as dangerous, with approximately 6,000 units of the COOWALK/COOWALI brand alone sold between August 2022 and May 2026. Across the three brands, the CPSC documented at least 15 burn injuries from Meisinuo insoles alone, including second- and third-degree burns that required hospital treatment, and four separate ignition or fire incidents tied to Junsyoung insoles.
Three brands, one battery defect, and burns requiring hospitalization
The core hazard is the same across all three product lines: lithium-ion batteries embedded in the insoles can overheat, explode, and ignite. In its notice for the COOWALK/COOWALI models, the CPSC warned that the battery can explode and ignite, even when the insoles are switched off. That detail sets these warnings apart from typical overheating cases, where risk is usually confined to active use or charging. Here, simply storing the insoles in a closet or gym bag can lead to a fire.
The injury toll is concentrated in the Meisinuo brand. According to the CPSC, there have been 17 incident reports involving Meisinuo heated insoles, with at least 15 of those resulting in burn injuries. Some victims suffered serious second- and third-degree burns that required hospital treatment. For the Junsyoung brand, the agency documented four thermal events, including ignition and fire, also with second- and third-degree burn injuries. The COOWALK/COOWALI warning did not specify a public injury count but carried the same “stop using immediately” directive and described a comparable battery defect.
All three brands were sold on Amazon.com. The COOWALK/COOWALI insoles were also available on GearTrade.com. The manufacturer behind the COOWALK/COOWALI line is Shenzhen Kubuzhineng Kejiyouxiangongsi, a Chinese firm that has not issued any public statement in the available record. The CPSC told buyers to dispose of the insoles rather than attempt returns, a step that signals the agency views the products as too dangerous to handle through a standard recall and return process.
Why voluntary reporting gaps let thousands of defective units circulate
The timeline raises a pointed question about how quickly battery hazards in low-cost consumer goods get flagged. COOWALK/COOWALI insoles were sold from August 2022 through May 2026, a window of nearly four years. During that stretch, approximately 6,000 units reached consumers through two online retailers. The CPSC warnings arrived only after injuries had already occurred and been reported through channels such as the agency’s public incident database, where consumers can submit accounts of unsafe products.
The pattern across these three brands points to a structural gap. Each product entered the U.S. market through third-party online sellers, primarily Amazon, without the kind of pre-market testing or certification that applies to many higher-end electronics. Lithium-ion batteries are well known to carry thermal runaway risks, yet the current system relies heavily on post-sale incident reports to trigger regulatory action. By the time enough complaints accumulate to prompt a CPSC warning, thousands of units may already be in homes, pockets, and shoes.
The fact that three separate brands with the same failure mode-lithium-ion battery ignition in heated insoles-all surfaced within a compressed window suggests the problem is not limited to one careless manufacturer. It reflects a category-wide vulnerability in battery-powered wearable accessories sold through marketplace platforms. Amazon and similar retailers list products from overseas manufacturers with minimal friction, and the burden of identifying defects falls almost entirely on consumers who file complaints after something goes wrong.
No formal recall has been announced for any of the three brands as of the CPSC warnings. The agency’s notices are classified as consumer warnings rather than mandatory recalls, which means there is no structured process for the manufacturer or retailer to collect and destroy the defective units. Consumers are simply told to stop using the insoles immediately and discard them in accordance with local guidance for battery-containing products. That approach limits further use but leaves many questions about accountability and cost.
What consumers should do if they own heated insoles
Owners of COOWALK/COOWALI, Meisinuo, or Junsyoung heated insoles are advised to stop using them right away, regardless of whether the product appears to be working normally. Because the CPSC has warned that the batteries can ignite even while switched off, the safest course is to remove the insoles from shoes, avoid charging them, and store them away from flammable materials until they can be discarded.
Disposal should follow local rules for lithium-ion batteries, which often require taking the product to a battery or electronics collection point rather than placing it in household trash. Consumers may also want to document their purchase history-such as Amazon order records-and any incidents or near-misses. That documentation can support potential future remedies if a recall or compensation program is later established.
Beyond these specific brands, the warnings are a signal to treat any low-cost heated insole with caution, especially if it uses an embedded rechargeable battery rather than an external power pack. Consumers can reduce risk by favoring products from manufacturers that provide clear safety certifications, detailed labeling, and accessible customer support. Checking for independent testing marks and reading incident reports in public databases can offer additional clues about whether a product line has a history of problems.
Marketplace responsibilities and the push for stronger safeguards
The heated insole cases highlight a broader debate over the responsibilities of online marketplaces. Platforms like Amazon currently act as intermediaries for millions of third-party sellers, many of them overseas manufacturers that have little direct presence in the United States. When a product is later found to pose a serious safety risk, it can be difficult for regulators and consumers to identify a responsible entity that can be compelled to conduct a recall or provide refunds.
In these warnings, the CPSC has chosen to focus on rapid public communication rather than waiting for a negotiated recall. That strategy gets information to consumers quickly but underscores the limitations of a system that depends on voluntary cooperation from sellers and platforms. Without a formal recall, there is no guarantee that all listings will be removed promptly or that consumers will receive individualized notifications about the hazard.
As lithium-ion batteries continue to spread into ever smaller and cheaper devices, from heated clothing to wearable accessories, the regulatory challenge is likely to intensify. The heated insole warnings show how a combination of embedded batteries, direct skin contact, and low-cost manufacturing can produce severe injuries from products that seem innocuous at first glance. For now, the most immediate line of defense is awareness: consumers who recognize these brand names, or who use similar battery-powered insoles, should reassess the risks and consider safer alternatives.
Ultimately, preventing similar incidents will require more than after-the-fact alerts. Stronger pre-market standards for battery safety, clearer obligations for online marketplaces, and faster data-sharing between platforms and regulators could all help close the gap that allowed thousands of hazardous insoles to reach consumers. Until those changes take hold, the CPSC’s message about COOWALK/COOWALI, Meisinuo, and Junsyoung heated insoles is unambiguous: stop using them, dispose of them safely, and treat unexplained warmth, swelling, or odor from any battery-powered wearable as a warning sign that should not be ignored.
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*This article was researched with the help of AI, with human editors creating the final content.
