Thermal Underwear lahti pro 5023568 — long-sleeve base layer, 35% cotton, 65% polyester

Thermal Underwear Lahti Pro 5023568 is made from a thermally insulating and breathable fabric with a weight of 220 g/m². A blend of 35% cotton and 65% polyester provides good air permeability and balanced comfort. A special fabric finishing process softens the material while maintaining durability, and a double-knit construction increases thermal insulation. The garment is CE marked (Category I) and conforms to EN ISO 13688. Size: L.

Advantages

The cotton–polyester blend ensures breathability and durability while the 220 g/m² fabric weight offers reliable warmth without excessive bulk. The finishing technique improves softness without compromising strength, and the double-knit structure enhances heat retention. Cuffs at the leg openings provide a secure fit and reduce heat loss.

Suitable for

• Layering under workwear in cold environments
• Outdoor manual work and construction
• Cold-weather maintenance and installations
• Everyday use where thermal comfort and breathability are needed

Key specifications

• Material: 35% cotton, 65% polyester
• Fabric weight: 220 g/m²
• Construction: double-knit
• Finishing: softening treatment
• Leg finish: cuffs
• Standards: CE Cat. I, EN ISO 13688
• Size: L

How to use

Wear the thermal underwear as a base layer under work trousers or additional insulating layers. Put on directly against the skin for best thermal performance and ensure cuffs sit comfortably around the legs to retain heat. Follow garment sizing to allow for freedom of movement when used under other clothing.

Usage recommendations

Machine wash according to care label instructions; avoid high-temperature drying and bleaching to preserve fabric properties and the soft finish.