Thermal underwear top Odlo BL TOP crew neck long-sleeve Active Warm, size M, polyester, grey

Odlo BL TOP crew neck long-sleeve Active Warm in size M is a men’s thermal base layer top made from polyester and finished in grey. The crew-neck design and long sleeves provide core warmth as a first layer for outdoor activities and cold-weather training. The slim fit silhouette and quick-drying polyester fabric offer close-to-body insulation and moisture management, intended for hiking, running, skiing and everyday cold-weather wear.

Advantages

The slim fit construction ensures the top sits close to the body for efficient heat retention without restricting movement. Polyester fabric delivers quick-drying performance to help manage sweat during activity and to reduce cooling between exercise sessions. The crew neck and long sleeves give continuous coverage of the torso and arms, making the top suitable as a base layer under outerwear or worn alone in milder conditions. The neutral grey finish allows simple layering with a range of outdoor garments.

Suitable for

• Hiking and trekking in cool conditions
• Trail and road running in cold weather
• Skiing and snow sports as a base layer
• Everyday cold-weather wear and commuting

Key specifications

• Fit: Slim fit for close-to-body layering
• Material: Polyester, quick-drying
• Neckline: Crew neck
• Sleeves: Long sleeves for full arm coverage
• Colour: Grey
• Gender: Male sizing
• Size: M

How to use

Wear the Odlo BL TOP Active Warm as the first layer next to the skin to optimise thermal regulation. For active use, pair it with mid and outer layers appropriate to ambient temperature and activity intensity. If wearing under a shell or insulated jacket, ensure the slim fit allows layering without excessive bulk. Follow garment care instructions on the label to preserve fabric performance and drying properties.

Usage recommendations

For best results during high-intensity activities, combine this polyester base layer with breathable mid-layers and a weather-appropriate outer layer. Allow the fabric to dry fully between uses to maintain insulation and avoid prolonged dampness against the skin.