I work for a mattress company and thought it was funny that graphene was for paint. Serta use to use graphene in their Icomfort linr 6-7 years ago. First I had heard of it and yes, supposedly helped you sleep cooler...
I`ve got some Lipo batteries for quadcopters that have graphene in them. Supposedly they give more punch than batteries without. Maybe they do and I haven`t stressed them enough otherwise to tell but they don`t fly any different or give a noticeable punch more than the same sized battery without graphene. So for $10 more and 20 grams heavier than a similar capacity battery why bother?