Long hours of snorkelling in lukewarm tropical water tend to make the skin on your feet soft and more receptive to blisters and chafing from your fins. To help prevent this Waterproof have designed the tropical sock to enable you to enjoy your dive for longer. • 2.0mm Thickness. • 100% Microcell CR Neoprene. • Bonded Hi-Quality Nylon thread. • Antislip Sole. • Antislip Heel. • Colour: Black. • Sizes: XS, S, M, L, XL, XXL Follow the link for Size Charts Workbook for the W30 Sports Series (PDF)