Aqua Lung 3mm Thermocline Zip Gloves The glove is made of 3mm regular neoprene. The finger seams are triple glued and blind stitched to reduce water exchange. The Zipper is a #5 plastic YKK zipper to prevent corrosion. Hook and loop tab holds the zipper puller in place and protects the slider. The palm of the glove is silicone printed to increase grip.