This custom has been on the drawing board for at least four or more years, so I am glad to finally get something physical out. Loved the Mr. Freeze that Anthony's Customs did a few years back and wanted to emulate the backpack in my own design. Unfortunately, I don't think my shaved down test tube is sealed enough, so all the air bubbles escaped. Thankfully, the backpack is attached via magnets, so when I come across something better, an upgrade will occur.