hydrogen

I see a lot of people who have bought a Hydrogen Proton ball machine list the #1 thing they love about it is the size and weight. With that in mind, I was wondering if anyone can you expand on this and is it really that big of a concern because here's the way I'm currently thinking about this...

I wanted to buy new tennis bag and one of the options was a bag by hydrogen. Unfortunately I couldn't find any info about it apart from official description and a few photos. I've got one and wish to share the photos of it covering all parts.