Särmä TST L1 Premium Boot Socks, Merino Wool

These are the lightest merino wool boot socks we offer and feel great when worn as a regular sock. The L1 Premium Boot Socks provide high performance in all but the hottest seasons, featuring a soft terry section from the toes to the heel and a sleek, form-fitting leg up to crew height. Made in Finland!

Need more than one pair? Check out this cheaper 4-pack.

• Functional Merino Wool blend
• Thermal terry from the toes to the heel
• Lightweight instep and crew-height leg
• Flat seams

You can use these daily without thinking about it and be happy. The full range of insulating and moisture-wicking features is unlocked when you put yourself to the test on a long hike or military yomp or doing shorter stints at a higher speed. Level 1 means you can wear these as-is or together with liner socks.

Materials and care

Materials: 62% Merino wool, 25% polyamide, 10% polypropylene, and 3% elastane.

Machine wash at 40 °C (104 °F), wool program and wool detergent recommended. If you pull the socks inside out and hang them to air between uses, washing is less frequently necessary.

The final fit is achieved after one wash cycle, as the sock will shrink about 3–5% in the first wash. This is taken into account in sizing.

And yes, the wool is mulesing-free!

Want to know where the merino wool comes from?

Our sock provider, Sukkamestarit, has joined the NATIVA system, which allows tracing the merino wool back to individual sheep farms. The packages feature a QR code for tracing the source of the Merino wool.

Helpful information on how to choose and use socks

If you haven't heard about liner socks before or are looking for solutions against sweaty feet or blisters and chafings, do click this link to read our article on how to choose and use socks.

Size info

The socks are manufactured according to European shoe sizes. The smaller option will likely fit better without feeling too tight if you are between sizes. See the chart below for size conversions.