SUPCASE Unicorn Beetle Pro Series Design Replacement Bands for Fitbit Inspire & Fitbit Inspire vs Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch: which is safer?

Where these two actually differ

• We flag Skin sensitization or contact dermatitis from elastomer additives, Bacterial or fungal growth on band surface, Degradation and microparticle shedding with age or UV exposure and Allergic reaction to fragrance or dye in colored bands on the Fitbit and not on the X-Doria.
• We flag Nickel leaching from stainless steel on the X-Doria and not on the Fitbit.
• The Fitbit is Silicone or elastomer band (unspecified polymer) where the X-Doria is Stainless steel, magnetic closure, 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.