Fourth Element Halo AR Socks use A°RGON, an aerogel insulation in a compression-resistant matrix, in three layers throughout, under a wind and water-repellent stretch outer layer. Fourth Element notes they are slightly thicker than its Hotfoot Pro socks.

Main features

• A°RGON thermal insulation.
• Low bulk.
• Water-repellent outer layer.
• Added stretch fabric for a snug fit.
• Machine washable.
• Three layers throughout.
• Sizing advice from Fourth Element: order by your shoe size rather than the size of your drysuit boots, because a snug fit is essential. Some drysuit boots may not have enough room; with an Argonaut drysuit, removing the footbed gives a little more.

Options on this listing

This page is the Halo AR Socks in size L (part number HARSBKL, Fourth Element product code HARSBK). Use the size buttons to see the other sizes.