My Girl meets daily her Mother for a walk with the dogs. As she is kinda hobby barista every day she takes 2 cups of coffee with her.
Thats the whole idea behind it. =)

Handle is with made with fuzzy skin to have a good grip at the handle.
(watch closely top and bottom has 2mm of non fuzzy skin that it fits snug into the holes where its mounted.)

2x M5 Bolts are needed + 2x M5 heatinserts.
if you dont like the extra secureness you can just bolt an M6 direct into the plastics.
But my recommendation is using heatinserts to be safe =)