These are single-lined, thin, high stretch Neoprene socks with a camouflage blue pattern called Blue Hunter. Discover the full line of Blue Hunter products: rash guard, wetsuit, gloves.The inner is lined in Metallite so they are easy to wear. The sole has an effective Non-Slip lining. They can be used with both closed foot fins for greater warmth and to protect the skin from scratches and chafing, as well as with firm-soled boots, using open-heel fins. In this case, warmth is considerably increased and it is also easier to put on your wetsuit. 3 mm Neoprene Inner lined in Metallite Blue Hunter camouflage pattern