Question Protecting glass of primary light

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# of dives
500 - 999
I am working my way through the cave training. I noticed that my primary light is prone to being banged around before getting in the water. Is anyone using a protection cap (maybe out of neoprene?) to protect the glass? I never thought about it for any of my other lights but the cost here is 3-10x in addition to the risk of light failure when deep into a cave. Curious to hear if this is a non-issue or others have found solutions to it
Yep, as Ron said, beer Koozies have long been used for that.
There is a better choice - helicopter tape. The tape is what you'd put on a helicopter blade to protect it from damage. Race cars use it, too.

Cut to 3/4"-1" width, wrap around the light head. I also put it on SPGs. It is durable AF and very easy to cut as it has paper backing. Use the sharpest blade you have or a safety razor if you must cut it to a funky shape.

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