Guru Black Waterproof Socks will provide you with a high level of protection and insulation in colder weather conditions. They feature a breathable membrane that prevents the build-up of sweat and helps to keep your feet dry. The socks have been designed with a three-layer construction; this means they are bonded together to create a single unit with no movement between them. Available in 2 sizes: UK 7-9 and UK 10-12. - Great insulation for use in colder weather conditions - Features a breathable membrane - Helps to keep your feet dry - Designed with a three-layer construction