TwoSun TS425 [-K110] • a thoroughly amateurish knife overview/review 

The TwoSun TS425 is a very interesting, very large and very excellent knife.
Its long, curved thumb/digit indentation (it's not a hole and nor is it a fuller - I'm unaware of the correct technical term for it and so put your answers in the comments please) is what grabbed me and IRL it works as just as good as it looks: it's a fantastic and unusual blade... feature.
if you like large, inexpensive D2 folders, grab this if you can - the eBay auctions for it are fierce RN!