High Density Exercise Yoga Mat with Strap vs All in Motion Yoga Mat Rubber: which is safer?

Where these two actually differ

• We flag Volatile organic compounds (VOCs) and manufacturing residues and Rubber degradation and stabilizer leaching over time on the CAP Barbell and not on the Iyengar Yoga.
• We flag Natural rubber latex allergen (if natural rubber composition) and Microplastic shedding from surface degradation on the Iyengar Yoga and not on the CAP Barbell.
• The CAP Barbell is NBR rubber, PVC, or similar synthetic rubber base where the Iyengar Yoga is Rubber (likely natural or synthetic rubber), 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.