@mattj Thanks for reaching out!
We are not aware of any after market crampon specific patches that are available. However, you do have a couple of options that can help you avoid this issue in the future:
- Use some Gear Aid Tenacious Tape Flex Patches. These are the most rugged patches that Gear Aid makes, and they are flexible as well.
- Wear a pair of gaiters when hiking.
- There are some repair shops that specialize in this kind of repair: check out Santa Cruz Gear Repair.
Lastly, as you're looking for pants in the future, often times this feature is prevalent on backcountry ski pants as it protects the pants from an errant ski edge while touring.
Hope this helps!