Yes, but you need 2. So go get ripped off twice.
yes!
Yes
glue
you can tell if the size of the power band is engraved on the inside of the band, on the opposite side of the power balance sign.
It is all mental, you know that you have the band on and that if you have the band on you will have better performance
Of course, its made from waterproof material.
Never had any in the first place
Yes. The 'authentic' ones say 'authentic genuine valid' in the hologram. The fakes say 'genuine authentic'. The real ones also have the power balance 'PB' logo on the band, the fakes only have power balance on the band.
yes it doesnt matter
No, they are both equally ineffective.
Right, but it doesn't really matter.
It wont shrink
power balance wrist band. google it