TWF Neoprene Socks Size Guide

This size guide covers TWF 3mm Neoprene Socks, available in six sizes from 2XS through to XLG. Sizing is based on UK shoe size. TWF use their own size code labels (2XS, XSM, SML, MED, LGE, XLG) — use the table below to match your UK shoe size to the correct code when ordering.

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Sizing Table — TWF 3mm Neoprene Socks
TWF Size Code UK Shoe Size
2XS UK 13–1
XSM UK 2–3
SML UK 4–5
MED UK 6–7
LGE UK 8–9
XLG UK 10–11

Sizing is based on UK shoe size. TWF use abbreviated size codes (2XS, XSM, SML, MED, LGE, XLG) rather than standard S/M/L labels. If between sizes, size up for a more comfortable fit.

Fit Notes — TWF 3mm Neoprene Socks
  • Size using your UK shoe size and match to the TWF size code in the table above. TWF do not use standard S/M/L labels — use the code column when ordering.
  • Made from 3mm neoprene, the socks will feel firm when first putting them on. A snug fit is normal and necessary for the sock to retain warmth effectively in cold water.
  • If your shoe size falls between two ranges, size up for a more comfortable fit. Neoprene has a degree of stretch and will ease slightly with wear.
  • The sock should sit smoothly over the foot with no folded neoprene or excess material at the toe. If the sock bunches, it may be too large — try the next size down.
  • Rinse in fresh water after every use, allow to dry naturally away from direct sunlight, and store flat. Do not tumble dry or leave in direct heat.
  • Unsure? Contact our team or call +44 1827 330600.
Frequently Asked Questions — TWF 3mm Neoprene Socks

Find your UK shoe size in the right-hand column of the size table above and note the corresponding TWF size code on the left. Use that code when placing your order. If your shoe size falls between two ranges, size up for a more comfortable fit.

TWF use their own abbreviated size codes rather than standard S/M/L labels. 2XS is the smallest size (UK 13–1), XSM covers UK 2–3, SML covers UK 4–5, MED covers UK 6–7, LGE covers UK 8–9, and XLG is the largest size covering UK 10–11.

Yes. The TWF 3mm neoprene socks are designed for open water use, providing thermal insulation to keep feet warmer in cold water. They can be worn with or without a wetsuit and are suitable for sea, river, and lake swimming as well as general beach and watersports use.

Roll the sock down before putting it on, then work it gradually up over the foot rather than pulling from the top. Wetting your foot or the inside of the sock slightly can help ease it on. Ensure the sock is fully seated with no folded neoprene before use. Take care with fingernails as neoprene can tear if snagged.

Yes. The socks can be worn underneath a wetsuit leg to provide additional thermal insulation at the feet and to reduce water flushing at the ankle. Ensure the wetsuit leg sits over the top of the sock for the best seal.

Rinse thoroughly in fresh water after every use to remove salt, sand, and chlorine. Turn inside out to rinse the interior as well. Allow to dry naturally away from direct sunlight and heat. Do not tumble dry, iron, or store compressed when wet.