This is the Aqua Lung 5mm Heat Glove Drysuit Gloves for Dry Suit Scuba Diving Features: Closed-cell neoprene featuring gas-filled micro bubbles for maximum warmth and dexterity. The interior surface of palm and fingers are lined with Titanium Slick Skin (TSS). TSS is warmer, has a faster drying time, and no stink! Minimal water seeps between you and the glove, providing an excellent seal when mated up against dry suit seals. Ergonomically designed for the perfect fit Pre-curved palm minimizes hand fatigue Laminated woven nylon outside finish - Built to last. Dry Seam Construction (DSC) seams! Glued, blind-stitched, with external seam seal. Virtually no water is circulated! Aqua Lung's top of the line sealed seam neoprene gloves are warm, flexible and tough. 5-finger models available in 3mm or 5mm. 3-finger design available in 6mm. "