pipe insulation, works awesome, i was hesitant at first because of sterility fears but just cold sterilize immediately prior to use with FDmadicide and alls good. hey caleb have you tried to autoclave the pipe insulation? just was wondering if that was an option haven't tried it. ive only used a few weeks but haven't seen a reason to, just thought that like with any thing else if it can be claved it would mean less doubt for some. i wrap my t-tech/rpg grips in plastic wrap, then the pipe insulation, then wrap the insulation with plastic wrap. works great. its like with anything, most things we use for tattooing were originally intended for some other use. we adopt it then it becomes standard. thanks for the idea on the other thread caleb