Safety Standard for Portable Hook-On Chairs Updated to ASTM F1235-25

The U.S. Consumer Product Safety Commission (CPSC) has issued a direct final rule updating the mandatory safety standard for portable hook-on chairs — the type of chairs that clamp onto table edges and are used as infant or toddler seats. The rule replaces the previously incorporated ASTM F1235-18 standard with the newly revised ASTM F1235-25 (2025 version), published by ASTM International in January 2026. This update is required under the Consumer Product Safety Improvement Act of 2008 (CPSIA), which mandates that CPSC update its mandatory standards for durable infant and toddler products whenever the underlying voluntary standard is revised by the relevant standards body. The process used here — a direct final rule — allows the update to take effect without a full notice-and-comment rulemaking period, given that it is a routine standards update. Manufacturers, importers, and retailers of portable hook-on chairs sold in the U.S. market will be required to comply with the 2025 version of the ASTM standard going forward. The revised standard likely includes updated test methods, performance requirements, or labeling provisions compared to the 2018 version, reflecting the latest safety research and incident data.

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