baby lying in crib
Vol. 1528 | 17 Feb 2026

CPSC adopts ASTM F2933-25 for crib mattresses from May 3, 2026, retaining modifications for full-size dimensions/sheet gaps, non-full-size F406 compliance, after-market play yard/bassinet testing.

On February 12, 2026, the CPSC issued a direct final rule updating the safety standards for crib mattresses.

Effective May 3, 2026, all crib mattresses must comply with ASTM F2933-25, subject to the following specific modifications:

  • Full-Size Mattresses (5.6.1.1): Must measure at least 27 ¼" wide by 51 ⅝" long. When fitted with a sheet, the corner gap must not exceed 3.15" (80.0 mm).
  • Non-Full-Size & After-market Mattresses (5.6.2):
    • Must meet ASTM F406 requirements regarding stability, cord length, and side height.
    • After-market versions must match or exceed original equipment size, lie flat against the support structure, and replicate any original manual storage or floor support features.
  • Mesh/Fabric Play Yards (5.8.1): After-market mattresses must pass ASTM F406 safety tests (including vertical displacement and floor strength) for every specific model they are intended to replace.
  • Interchangeable Bassinet Pads: Must additionally meet ASTM F2194 requirements for thickness and side height.

In addition, test methods in sections 6.2.2 and 6.2.3.5 – 6.2.3.7 have been updated or added.

If you have any questions, please contact:

Carl Tso

Assistant Manager - Regulatory, Hardlines

Carl is a seasoned professional with over 20 years of experience in the toy and hardline industries. Throughout his career, he has developed extensive expertise in navigating global regulatory frameworks, ensuring compliance across diverse markets, including the European Union, the United States, Southeast Asia, South America, and beyond.

Email: carl.tso@intertek.com

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