This is the DUI Ultra 7mm Warm Neck Collar Scuba Diving Drysuit Hood Features: Large face seal for warmth (11mm includes extra large face seal) Strategically placed seams for longer wear no seam under the chin 4mm skirt for easy tucking into the warm neck collar with binding Made with high quality superior stretch neoprene for ultra comfort. Standard Self-Venting Drysuit Hood (with collar) drysuit hoods.