Deep Pocket Mattress Protector - Full vs Premium Mattress Topper: which is safer?

Where these two actually differ

• We flag VOC off-gassing from polyurethane, Coating degradation and leachate from water-resistant treatment and Microfiber shedding from polyester blend on the Brooklinen 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 Brooklinen.
• The Brooklinen is polyurethane or polyester blend with water/stain-resistant treatment where the Helix is polyurethane foam, polyester cover, which is most of the difference in these two grades.
• The gap is 45 points, wide enough that this is not a close call, and the Helix is the one to buy.
• We are less certain about the Brooklinen grade, at 45% confidence against 72%, because it discloses less.