Thermal Shirt Thermowave Merino Warm Active

Thermal Shirt Thermowave Merino Warm Active merino blend dual-layer performance

Thermal shirt Thermowave Merino Warm Active is a women’s technical base layer engineered for moisture control, thermal efficiency, and long-distance comfort in outdoor environments. This model uses a dual-fibre structure combining recycled polyester, merino wool, and polyamide to enhance durability, breathability, and antibacterial performance compared with single-fibre constructions. The 160 GSM fabric offers a balance of lightweight mobility and reliable insulation for trekking, camping, and cold-weather outdoor gear systems. Merino wool provides natural odor resistance and thermoregulation, while functional polyester accelerates moisture transport for improved base-layer efficiency. Polyamide fibers reinforce structural strength, helping the garment maintain shape and longevity during repeated use.

MerinoDry technology forms a two-layer system: functional polyester on the inside for rapid moisture wicking, and merino wool on the outside for warmth and natural antibacterial protection. This architecture reduces skin irritation, maintains a stable microclimate during activity, and keeps the wearer dry in fluctuating temperatures. Merino wool works as a natural thermal regulator, maintaining warmth in cold conditions and cooling the body when temperatures rise. All merino used by Thermowave is mulesing-free, traceable, and biodegradable. Recycled polyester contributes to sustainability, requires fewer resources to produce, and provides reliable elasticity and freedom of movement during demanding activity.

An important performance advantage of this fibre combination over 100% merino is functional balance. Pure merino is warm and comfortable, but it absorbs moisture slowly, dries slowly, and loses shape faster under mechanical stress. Introducing recycled polyester significantly improves moisture transport speed, drying time, and elastic recovery. Polyamide increases abrasion resistance and prevents premature thinning in high-movement zones. The blend delivers the thermal benefits of merino while eliminating its weaknesses, resulting in a base layer that is stronger, more durable, better at wicking sweat, and more stable during long outdoor sessions.

Features

• ➤ Lightweight: 160 GSM fabric provides insulation without restricting movement.
• ➤ Moisture management: Dual-layer MerinoDry system ensures rapid sweat transport and consistent dryness.
• ➤ Durable build: Polyamide reinforcement increases abrasion resistance and long-term garment stability.
• ➤ Technical design: Raglan sleeves, flat seams, and longer back panel improve mobility and reduce skin irritation.
• ➤ Breathability: Natural merino fibres allow efficient airflow and regulate temperature during active use.
• ➤ Odor control: Merino wool’s antibacterial properties reduce odor formation during multi-day wear.
• ➤ Comfort fit: Next-to-skin stretch material enhances comfort for extended outdoor activity.

The shirt performs effectively in cold-weather hiking, trekking, and multi-layer outdoor systems, maintaining warmth during high-output movement and rest phases. It is suitable for variable terrain and mixed-weather trips including morning frost, wind exposure, and light precipitation. The material construction supports long hikes and active movement, such as autumn trekking in Sweden. Its balance of breathability and thermal retention makes it functional across transitional seasons and diverse outdoor setups.

Technical Specifications

Fabric and Technology

• MerinoDry dual-layer system accelerates moisture transfer while providing natural warmth and odor resistance.
• Merino wool ensures thermoregulation and antibacterial protection without compromising comfort.
• Recycled polyester enhances drying speed and elasticity during high-output activity.
• Polyamide fibres improve structural durability and extend garment lifespan.
• Flat seams and raglan construction minimize friction and maximize mobility.

About Thermowave

Thermowave is a performance apparel brand from Europe specializing in technical base layers for outdoor, trekking, and professional-use environments. The company is known for dual-layer moisture transfer technologies, sustainable fibre blends, and mulesing-free merino wool. Thermowave develops high-efficiency thermal clothing designed for comfort, durability, and multi-day outdoor performance.