Most goalkeepers choose their gloves based off design and never consider which "cut" is best for them!
The Roll Finger Cut is designed with two pieces of latex. (Palm/Back Hand) It creates the palm to "roll" around the fingers! Goalkeepers with larger hands will benefit more as they are a looser fit.
With the latex rolling around the fingers, it increases the surface area of the goalkeeper's palm available to make contact with the ball! This ensures goalkeepers are given the correct tools to make the proper saves needed!