The Gray Barn Sleeping Hills 3M Microcell All Season Moisture Wicking Lightweight Sheet Set vs 400-Thread-Count Organic Percale Sheet Set: which is safer?

Where these two actually differ

• We flag Formaldehyde-based finishing resins, Undisclosed proprietary coating chemistry (3M Microcell), Microplastic shedding from polyester fibers and Coating degradation and loss of water/stain repellency on the Bed Bath & Beyond and not on the Pottery Barn.
• We flag Azo dyes and colorant toxicity and Residual manufacturing odors and off-gassing on the Pottery Barn and not on the Bed Bath & Beyond.
• The Bed Bath & Beyond is Polyester blend with 3M Microcell moisture-wicking treatment where the Pottery Barn is 100% organic cotton percale weave, 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.