How do I choose the right size for this men's thermal underwear set?

Thermal Insulation: Knit construction traps body heat to keep you comfortably warm in cold conditions without adding bulk.
Compression Fit: The form-fitting silhouette supports muscles during activity and promotes better circulation for enhanced endurance.
Flexible Fabric: Polyester + Elastane blend offers four-way stretch for unrestricted movement whether you're sprinting, squatting, or stretching.
Moisture-Wicking: Engineered to draw sweat away from the skin, keeping you dry and comfortable during intense workouts.
Full Coverage Set: Includes a long-sleeve top and full-length leggings — complete first-layer protection from neck to ankle.
Sizes Available: S / M / L / XL / 2XL / 3XL / 4XL
No Wool: Suitable for those who prefer non-wool thermal layers.

This thermal underwear uses Asian sizing, which typically runs 1–2 sizes smaller than European or Western sizes. Please refer to the height and weight guide provided above. If you are between sizes or unsure, we recommend sizing up or reaching out to us before placing your order.

Can this thermal base layer be worn for outdoor sports in winter?

Absolutely! This compression thermal set is designed as a first base layer for a wide range of winter activities including running, jogging, skiing, and hiking. The knit polyester-elastane fabric provides warmth, flexibility, and moisture-wicking properties to keep you comfortable during outdoor exercise.

Is this thermal underwear set suitable as an everyday underlayer?

Yes — while it is performance-oriented, its slim compression fit also makes it ideal as an everyday thermal underlayer beneath jeans, trousers, or other outerwear during cold weather months.