This quality, well constructed Titanium hood is a perfect addition to your scuba set. Have fun and be warm during your dives. Hood designed to wear with a dry suit 6 MM of thickness Constructed with Hyperstretch (a material known for comfort and warmth) on the chin that gently cups the chin for comfort and warmth No seams down the middle of the chin which means added comfort 3 side and back panels of compressed neoprene which keeps you warmer as you descend deeper Glued and blind stitched Durable zipper on the back with hook and loop closure