The Seal Skinz Merino Liner Socks are close fitting liner socks with a high merino wool content that can either be worn on their own or can be layered under a pair of other socks for additional comfort increased moisture control & insulation These liner socks are ideal for pairing up with Seal Skinz waterproof socks as an outer to offer you the best combination of warmth & waterproof protection ideal for cycling walking & everyday use in the colder months