Completely. Merino regulates temperature and moves moisture away from the body, keeping you comfortable even in intense heat.

Merino is a lightweight natural fiber that thrives in heat and humidity. It regulates body temperature, manages moisture so your body can sweat naturally, and resists odor without chemical treatments. Wool has been worn in Nordic sauna culture for centuries — it simply belongs there.

The opposite, actually. Merino is thermoregulating — rather than trapping heat, it helps your body release it. Most people are surprised by how comfortable it feels compared to anything else they've worn in the sauna.

No. Merino fibers are far finer than traditional wool, making it soft enough to wear directly against skin.

Yes — and it works beautifully as part of a sauna and cold plunge ritual. In cold water it takes the edge off the initial shock, and afterward it helps you warm back up gradually. Not designed for lap swimming, but ideal for everything the sauna ritual involves.

Machine wash cold on a wool or gentle cycle and hang to dry. Avoid hot water and high heat — wool doesn't need it anyway.

Less often than you'd think. Merino naturally resists odor and bacteria, so it doesn't need washing after every use. After the sauna, hang it to air out — most people find they only need to wash it every few weeks. Machine wash cold on a gentle cycle and hang to dry when it's time.

Most swimwear is made from plastic-based synthetics like polyester — forms of plastic that release microplastics in high heat, trap sweat against the skin, and become genuinely uncomfortable. The sauna opens your pores and increases circulation — it's exactly the wrong time to be wearing plastic. (Swimsuits, we're looking at you.)