AQUAZ USA Titanium α Boot Foot Waders (High Grade KENCUBE Special Edition) These neoprene waders are made with Titanium α fabric, which has "40% more heat retention than standard neoprene." This item is a reliable choice for winter, achieving the heat retention of 6mm-thick neoprene while being as lightweight as 4mm-thick neoprene. Quoted from YouTube: https://youtu.be/itFN3J98GTM?si=0uJJoHe3CwvIn-nD Size: S, Boots: 26cm No comments, no negotiations. Used twice. Any dirt has been wiped off. There is dirt on the soles of the boots.