Go Pro grip Ferdinand Lösch

I have designed this Go pro grip for scuba-diving or just General needs where you need to have a good grip on your go pro.
I have designed if so that it has to hollow Chambers for optimal floating ability so if you let go of your go pro when scuba-diving it doesn't disappears into the endless depth of water .
Best printed add 0.06mm resolution if you can or 0.1 and 
1.2mm Shell thickness
40-80% infill