JT Proflex Goggle Skirt Bottom Liquid Sapphire BlackJT Proflex Goggle Skirt Bottom Liquid Sapphire Black JT ProFlex skirt bottom assembly with a Sapphire nose and black bottom. Comes with a magnetic chin strap. A great way to customize your goggle or build your own setup. Yes these are official JT Paintball bottoms, often called skirts. Note: Packaging says Sapphire Liquid nose, but we did not see any liquid.