@AstorAaron @Fyodor32768 They vary a lot. Some are terrible to breathe and the soft ones are generally more comfortable (subjective I guess) than the hard shell. I can't feel and difference breathing with or without a VFlex, and Aura is close. Auras are easy to find, VFlex more obscure.
@AstorAaron@Fyodor32768它们变化很大。有些很难呼吸，软的比硬的更舒服（我想是主观的）。无论是否使用VFlex，我都无法感觉和区分呼吸，而且灵气很近。光环很容易找到，VFlex则更模糊。