As you collect your arsenal of OPST tips, you are going to want to organize them somewhere. I like to have one of these wallets for each different weight class rod. So my single hand 4wt has a tip wallet with 5′ micro tips. Then my 6wt has a separate wallet with 7.5-10′ tips. And my switch rod has its own with 10-12′ tips.
It’s good to be organized!