2025 New Collection This was a gift, but I'm selling it as I don't plan to wear it. 100% merino wool moisture-wicking and heat-generating underwear with comfortable temperature regulation. Comfortable for everything from city wear to mountain climbing, hiking, and outdoor activities. - Material: 100% Merino Wool - Size: M - Features: Moisture-wicking and heat-generating - Temperature Regulation: Raises body temperature by approximately 3.5°C SSZ woollabo 2tacs BAA Those who like these brands, please consider! Thank you for looking.