7mm Hyperflex PRO Cold Water Wetsuit BootsHyperflex did it again! After a decade of success with the PRO wetsuit boot line, Hyperflex once again improved their boots, further refining the fit and materials. High-end superstretch neoprene ensures flex and a good fit. The sealed seams are reinforced with external Fusion Welded liquid taping. A poly fleece lining, a tapered ankle, and glideskin seals ensure that water entry is kept to a minimum so your feet remain as dry and warm as possible. A textured sole provides necessary traction while keeping bulk minimal. If you want the best, go with the PRO boots.