greenguard certified crib mattresses

Covers are commonly cotton or polyester knits (including organic cotton options). Cores vary across polyurethane foam and innerspring/steel coil constructions; some listings also describe sustainably sourced or upcycled core materials.

Reported weights in this set range roughly from 7 pounds up to about 14.4 pounds. Foam models tend to be among the lighter options, while innerspring/coil models generally appear heavier.

Warranty lengths vary by model in these listings and include lifetime limited warranties as well as limited warranties of around 10 years and 7 years.

Common labels include GREENGUARD Gold for low chemical emissions, ASTM testing references, JPMA certification, foam certifications such as CertiPUR-US, and mentions of CPSIA-compliant testing for lead and phthalates.

Many listings describe firm sleep surfaces and dual-sided two-stage designs: a firmer infant side and a softer toddler side intended to be flipped after about a year. Product details often label the infant/toddler sides and reference firmness testing.

Reported thicknesses in this group include about 4.5 inches, 5 inches, 5.25 inches, 5.5 inches, and 6 inches, so listings cluster roughly in a 4.5–6 inch range.

Product data shows foam cores (polyurethane, sometimes CertiPUR‑US certified), innerspring/coil cores (Bonnell or continuous coils with varying coil counts), and breathable or specialty cores described as polymer or open-air 'cloud' styles made from sustainable or upcycled materials.

Many listings include waterproof or water‑resistant covers, removable outer covers that are machine washable, plus care instructions such as spot/wipe cleaning or machine washing the outer cover.