Almost Perfect PRO Yoga Mat vs Premium 1/2-inch Extra Thick 71-inch Long High Density Exercise Yoga Mat with Comfort Foam and Carrying straps: which is safer?

Where these two actually differ

• We flag Volatile organic compounds (VOCs) and formaldehyde off-gassing, Natural rubber protein allergen (latex sensitivity) and Microparticle shedding from foam and rubber degradation on the Manduka and not on the ProSource.
• We flag Volatile Organic Compound (VOC) off-gassing and Bacterial or mold growth from moisture retention on the ProSource and not on the Manduka.
• The Manduka is closed-cell PVC-free foam, rubber top where the ProSource is Closed-cell foam, NBR rubber base, which is most of the difference in these two grades.
• The gap is 25 points, wide enough that this is not a close call, and the Manduka is the one to buy.