About the Zone3 Neoprene Swim Socks Zone3 Neoprene Swim Socks tight fitting by design to ensure minimal water entry and help maintain a strong leg-kick whilst swimming. Zone3 designed solution to water logging by increasing the length of the sock, so it could be tucked into the wetsuit to ensure no exposed skin. They also added a Velcro strap to keep the sock in place during the swim. A simple solution but an industry first! Teamed with the Zone3 neoprene cap and gloves, these best-selling accessories are perfect for anybody swimming in cold water conditions. Key FeaturesUnique design with longer length and Velcro strap to prevent the socks falling off High stretch 2mm neoprene designed to be a tight but comfortable fit. A durable gripped sole for protection and stability when walking to and from the water, whether by the sea, lake or river There are 3 sizes: Small 3-6 (UK), medium 6-10 (UK), Large 10-13 (UK)