I purchased this new and used it once, but the tightness around the neck didn't suit me, so I'm putting it up for sale. Below is the product description. Made in Japan for peace of mind, with the highest quality! MAGIC, a winter accessory brand released by BE WET, which also produces world-class wetsuits! 1.8mm INNER NECK The Prime α series, a sports model that creates the best feeling. This item improves the fit of the neck area and reduces water ingress from the collar. It's effective with non-zip and long chest zip wetsuits, but it works especially well with back zip wetsuits. 【Material】 S2 (Super Sports) While being brushed, it exhibits overwhelming stretch performance, creating a high-fit feel. Antibacterial and deodorizing yarn suppresses unpleasant odors, and moisture-absorbing and heat-generating material enhances heat retention. 【Size / Neck Circumference】 L / Approx. 34-37cm