Thermal underwear

Thermal wear is the layer worn closest to your skin. Its job is to regulate temperature and wick moisture away from the body. Unlike regular cotton clothing, thermal wear:

• retains warmth even when you’re sweating hard,
• wicks moisture,
• protects you from the cold both during activity and at rest.

Sport365 offers thermal wear for easy walks as well as intensive skiing, hiking, or winter training.

Our range includes different types of thermal wear tailored to various weather conditions, activities, and body needs:

• Synthetic thermal wear (polyester or polypropylene) — Lightweight and quick-drying; ideal for high-intensity activities (runners, skiers, mountain hikes).
• Wool thermal wear (merino, etc.) — A natural heat regulator that resists odor and works well at low or fluctuating intensities. Also great for daily wear.
• Hybrid models — Combine wool and synthetics. Stretchy and suited to changeable conditions.

Consider three key aspects when selecting thermal wear:

• Activity intensity — choose warmer wool layers for easy outings; breathable synthetics for high-intensity training.
• Weather conditions — the colder it is, the thicker/warmer the layer you’ll need.
• Personal needs — do you sweat a lot, or is easy-going comfort your priority?

For example, Odlo Performance Warm models are ideal for active sport, while Rukka merino pieces deliver all-day comfort—even under a sweater.

• Whistler — Great balance of price and quality.  Available in both wool and synthetic options; suitable for daily use and active weekends.
• Viking — Nordic durability and function. Popular among hikers and winter-sport fans thanks to high breathability and ergonomic fits.
• Bjorn Daehlie — By athletes, for athletes. A top choice for intensive skiing and winter training; compression fits with excellent moisture control are available.
• Odlo — Technically advanced thermal wear for every level. Swiss know-how for both everyday base layers and high-intensity racing.
• Rukka — Warm comfort for winter days. Softer, warmer blends of wool and synthetics—great if you value comfort both in motion and at rest.

The Sport365 team doesn’t just sell—we test the pieces in real conditions: skiing, running, and hiking. Our advice is experience-based, and we deliberately select brands and models that:

• last for multiple seasons,
• keep their shape after washing,
• don’t chafe and don’t trap excess moisture.

• A wide, carefully curated selection — from simple sets to technical solutions.
• Fast delivery and easy exchanges if the size or model isn’t right.
• Knowledgeable support — we’ll help you pick what fits your sport, body type, and budget.
• A refreshed range every season — only current, up-to-date models.
• Loyalty benefits and great prices during regular promotions.

Need something more specific? Also see:

• Women’s thermal wear
• Men’s thermal wear
• Children’s thermal wear

Whether you want everyday warmth in the city, better performance on the trails, or comfort on a hike, quality thermal wear is a step toward comfort, health, and safety. Choose proven quality and expertise—order your thermal wear at Sport365.lv today!