It's a nitrogen..... blend.
Peace
Dave
I think all this nitro stuff is a true asset if it works like folk say it does to help keep tires from losing air and keeps tires from perhaps being under inflated. But I am a true believer in that if it’s free, it can’t be all bad and that’s what air is.
I have a TPMS, I bump my tires and still carry an air gauge in all my vehicles. If if I need air, I pull out my Viair or pull into a gas station and don’t worry about how it’s affecting my nitrogen mix.
I feel the majority may agree with me, but my dear wife would tell me, you’ve been wrong so many times.