Based on this product's specifications, here are some alternatives and similar models
Ortovox 185 Rock'N'Wool Print SP Thermal Leggings, Green Sage
Summary description:
The Ortovox 185 Rock'N'Wool Print SP thermal leggings are high-quality base layer bottoms designed for alpine activities. Crafted from premium merino wool, these leggings provide excellent temperature regulation and moisture management. The 185g/m² fabric weight ensures optimal warmth during cold-weather sports, offering a comfortable fit and natural odor resistance for skiing, mountaineering, or winter hiking.