/jp/ - Otaku Culture

>always use the hot water method for heating up onas
>get a hip
>too big to really submerge anywhere reliably and consistently.
>try out a cheap warmer
>works great at first
>go for more than one round one day, just fill up hip with lube and insert warmer
>eventually realize it must've broke because it wasn't warming anymore

So, how advisable would it be to just put a condom on the thing to keep it "waterproof" when heating up a hole+lube? Or is that not viable? Any other warmers that I can just keep putting back into the damn thing after multiple rounds?