people are recommending that a retractable holder may be useful. Why??? and if it is what kind do you need i.e. does in need to have a plastic bit for a pass to go into ????
If you are going to Pamporovo you will not need one as they operate a scanner system that will recognise your pass as you approach the turnstiles. You can just leave it in your pocket and forget about it.
The lift passes are now scanned so you do not need to take them out of you pocket. Some new jackets have a nice pocket on the left side as mine does for your pass. Or as my partner did stick it in you inside pocket of your jacket.
Matty Not too sure about Borovets, but many Ski resorts including Bansko and Pamporovo use the intelligent hands-free Austrian design SKIdata lift pass systems.
The retactable lift pass holders are evrywhere and they are very cheap to purchase once you are there. We got oursin te ski shop in the Samokov as soon as we got our passes just to make sure we didn't lose them before leaving the buildin!!