That is silicone-primarily based so There are plenty of brands, you may pick one of these for making a silicone mask. The minimal internal volume makes the Calibro perfect for each freedivers and scuba divers when you don’t really need to equalise just as much any time you descend or https://jasperszgko.blogzag.com/72883158/getting-my-realistic-rubber-silicone-mask-to-work