After a little mishap this year I redid my safety stuff. I have always used Summit SOP, looked into it more and they expire 5years after production. I really don't care if they may still work, I would like them to work. Went with Hunter Safety Systems lite one, black not camo, it was cheaper. The other HSS I had held were heavy, this one is easy on and off, light and adjusts well. I'm fussy and would just buy another if I didn't like it. I recommend it highly, along with the lifeline.