Round Toe Wetsuit Boots for Boys. Features include: StretchFlight neoprene for increased warmth and comfort without sacrificing flexibility, 24% less CO2 emissions per wetsuit, Limestone-derivate eco-friendly neoprene made from scrap rubber tires and Bluesign? certified, External seams: Flatlock stitched seams that are locked but not sealed, Entry: Hook and loop adjustment, Aqua Alpha, non-toxic, water-based glues.