Reisport Protec Elite Hook & Loop High Bar Grips, Gymnastics

Interesting product. It seems very high quality built, and leather and stitches look like they would last forever. However, the holes for the fingers are too narrow. Instructions say "do not use scissors" - I don't think that any scissors would cut this tough material. I tried very hard to widen the holes, and I am sorry - I am not an expert shoemaker or leather expert. I tried many tools in my garage shop, and found this challenging. After an hour of work and using various tools (sanding paper, file) etc. I made tiny progress, but still could not get my fingers through (I have normal hands - I have many crossfit colleagues with bigger hands). I have a feeling manufacturer should have included a tool for this. Not sure what to do, I am looking for a colleague to give this as a gift.