Headzone Machi helmets from Australia have built in waterproof receiver radios and have proved vary reliable at a number of drop zones along the east coast. Check them out, you will be pleasantly surprised!
on top of all that has been said so far, sticky ripstop tends not to stick very well to modern ZP canopies. If you are worried about those small nicks in your canopy go and have a chat with your rigger, they will set you straight!
student radios
in Instructors
Ripstop
in Gear and Rigging
If you are worried about those small nicks in your canopy go and have a chat with your rigger, they will set you straight!
Ugliest pilot emergency parachute?
in Gear and Rigging