21" X 19" Replacement Seat Cushion - Knife-Edge, Knife-Edge/Pesto - Grandin Road vs Acadia Outdoor 61in Sofa Cushion: which is safer?

Where these two actually differ

• We flag Flame retardant chemicals (brominated or phosphate-based), Azo dyes and heavy metal colorants, Formaldehyde or formaldehyde releasers (in fabric finish or trim bonding) and Volatile organic compound off-gassing (VOC) on the Grandin Road and not on the .
• We flag Stain-resist fluorinated finishes (PFAS-class), Volatile organic compounds (VOCs) from coating or dyes, Coating degradation and microplastic shedding and Mildew and bacterial growth if moisture trapped on the and not on the Grandin Road.
• The Grandin Road is Upholstery fabric with knife-edge trim; fiber content not fully disclosed in product name where the is Polyester cushion cover; likely acrylic or polyester-blend upholstery, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.