Coop Sleep Goods Essence Down Alternative Mattress Topper vs Premium Mattress Topper: which is safer?

Where these two actually differ

• We flag Volatile organic compound (VOC) off-gassing, Microfiber shedding and inhalation, Water-repellent or stain-resistant chemical coatings and Dust mite and mold growth (maintenance-related) on the Coop Home Goods and not on the Helix.
• We flag Volatile Organic Compounds (VOC) off-gassing from polyurethane foam, Polyester cover degradation and microfiber shedding, Polyurethane foam degradation and chemical leaching with age and Water-resistant coating composition (undisclosed) on the Helix and not on the Coop Home Goods.
• The Coop Home Goods is Down alternative polyester fiber fill, polyester cover where the Helix is polyurethane foam, polyester cover, 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.