VioTech Suregrip is a comfort cushion for bows.
It protects leather grip on the bow and provides comfort for your thumb.
Each tube of VioTech Suregrip includes 2 thumb cushions. It is quite easy to insert cushion on the bow stick, especially if you use a little bit of Vaseline on inside end of the cushion. All you need to do is to remove the frog and slide Suregrip over the leather grip.
Looks great, protects your bow and provides comfort. Better than any surgical/rubber tube.