The Regulator 5mm Round Toe Booties trade the split toe of their thinner siblings for a full-foot design built to hold heat through the coldest sessions, rated for water as low as 45 degrees. The 85% Yulex natural rubber comes from Forest Stewardship Council-certified sources, and NetPlus recycled nylon linings bring a soft, solution-dyed layer against the skin instead of a fully synthetic lining. What Our Gearhead(R) Experts Are Saying:"My toes stay warm through a full winter session without the cold creeping in around a split seam, and the full-foot fit never feels like it's costing me feel for the board."