Reddit mentions of Emi-Jay Hair Tie Collections, Classic 5 Pack

Not a man, nor do I have a beard, but my SO does and I enjoy my hair care. Best suggestion I could make, if you're worried about breakage, is oil it at night and use a silk pillowcase or somehow finagle a silk scarf around your beard (I'm just the idea guy, you can figure out the logistics). The silk keeps it under control and keeps it from frizzing/breaking. Honestly, you might look into some of the African-American hair care methods. That's where I started when I began making beard oils/balms for my SO as his beard is pretty coarse and thick, and it's served me well so far.

Also, if you're worried about the hair ties damaging, use knotted or no crease hair ties. I find they're a bit easier on the hair.