The only name when it comes to Thumb Tips are Vernet! Here you'll fine a selection of the Vernet Range.
Here's what Vernet says:
Thumb Tip XXL Size
Are the Thumb Tips on the market too small for your thumb?
Isn’t it disappointing when you can’t perform a Thumb Tip effect because you can’t find anyone that fits your thumb?
VERNET has the solution!!!: The new XXL super large thumb tip. The best choice for people with larger thumbs or needing more space in the tip.
Vernet product code - D-009