The Mountain Warehouse Men's Merino Wool Thermal Base Layers Set is a versatile ensemble designed for comfort and performance. Crafted with a blend of 70% Merino Wool and 30% Polyester, it offers a plain design that seamlessly blends with any outdoor attire. The fabric technology boasts anti-bacterial properties to keep you fresh, is breathable for optimal comfort, features Isotherm insulation for maintaining ideal body temperature, and is lightweight for ease of movement. This set includes one top and one bottom, both equipped with elasticated waistlines for a snug fit.