A neoprene socks Sandiline One42 are thin socks from the One42 line of carefully designed body hugging baselayer clothing. The clothes of the One42 line are warm, comfortable, very performance oriented, stretchable and always return to their original shape. They are made of thin 0.5 mm neoprene and on the inside is a soft fleece thermal layer that is pleasant to the skin and warm in cold days. You can also comfortably wear them over the socks of your dry suit or trousers.