That is a cute minor machine using a textured flat region over the front – having an Nearly rubbery grip sense. I have experimented with scraping this which has a fingernail and it doesn’t scratch or come off so needs to be very really hard wearing. The UB Lite Pod https://bookmark-vip.com/story19040357/the-ultimate-guide-to-lost-vape-thelema-solo-dna100c