19" X 17-1/2" Replacement Seat Cushion - Knife-Edge, Knife-Edge/Canvas White - Grandin Road vs Acadia Outdoor 61in Sofa Cushion: which is safer?

Where these two actually differ

• We flag Formaldehyde-based finishing resins, Flame retardant treatments (brominated or chlorinated), Microbiological growth (mold, mildew, bacteria) and Polyester fiber shedding and microplastics 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 Canvas fabric (likely cotton/polyester blend) 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.