Men's Infrared Merino Baselayer Ecoknit LS
Men's Infrared Merino Baselayer Ecoknit LS
A lightweight, seamless Ecoknit Merino baselayer combining recycled KYMIRA® infrared technology with natural merino softness. Breathable, quick‑drying and thermoregulating with cooling zones and stretch panels — built for training, hiking, winter adventure and year‑round recovery . . .
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Easy returns.
Payment options available.
Easy returns.
KYMIRA Men's Infrared Ecoknit Merino Baselayer
The Women’s Infrared Ecoknit Merino Baselayer is KYMIRA’s lighter, more versatile long‑sleeve merino baselayer, engineered for athletes and outdoor explorers seeking natural comfort with science‑backed performance benefits. Made using fully recycled KYnergy® Infracycle™ infrared technology and sustainably sourced Merino Wool, the garment actively enhances circulation, oxygenation and muscle readiness to improve performance and accelerate recovery.
Its 3D seamless knit ensures a smooth, irritation‑free fit, while cooling zones under the arms and across the shoulders keep your temperature balanced during any activity — from winter running and alpine hiking to travel, training and all‑day wear.
The breathable, quick‑drying merino blend naturally manages moisture, resists odour and provides next‑to‑skin softness you can rely on for multi‑day adventures. Expandable side and arm panels offer adaptive flexibility, making it a perfect fit for dynamic movement or layering beneath outerwear.
Wear it as a light knit jumper alternative or as a performance baselayer — the infrared technology works continuously to boost recovery, reduce fatigue, support tissue repair and help you feel prepared for tomorrow’s session.
Use Cases
Performance Training (All Seasons)
- Lightweight merino + infrared boosts warmth when you’re cold and disperses heat when you’re warm.
- Enhances blood flow and primes muscle elasticity for better performance and reduced soft‑tissue injury risk.
Hiking, Trekking & Outdoor Adventure
- Ideal for multi‑day trips thanks to merino’s natural antimicrobial properties.
- Cooling zones and breathable Ecoknit construction adapt to terrain, altitude and effort.
Everyday Comfort & Travel
- Feels like a light knit jumper you can wear on its own or as a base layer.
- Seamless finish offers all‑day comfort for commuting, travelling or working outdoors.
Recovery & Wellness
- Infrared increases nitric oxide activity, improving circulation, oxygenation and tissue repair — accelerating recovery after training or long days on your feet.
Who It's For
- Active women training in variable or cool conditions
- Hikers, outdoor enthusiasts & winter adventurers
- Wellness‑focused users seeking infrared recovery benefits
- Those wanting a light, soft, climate‑responsive merino layer with scientifically backed performance advantages
Key Features
- Cooling zones underarms & shoulders for thermoregulation
- Fully recycled KYnergy® Infracycle™ infrared fibres for circulation & recovery enhancement
- Seamless 3D knit construction for comfort and reduced friction
- Expandable side and arm panels for a flexible, contoured fit
- Breathable & quick‑drying merino blend for multi‑environment use
- Sustainably sourced Merino Wool for softness, odour resistance & moisture management
- Lightweight warmth suitable for training or layering
- Infrared‑driven performance boost: improves elasticity, endurance & injury‑prevention
Protocols:
Warm‑Up:
Wear 15–20 mins before activity to boost circulation, warm muscles quicker, and reduce cold‑weather injury risk.
Performance:
Wear throughout training for enhanced oxygenation, thermoregulation and endurance. Works in −35°C to +48°C environments.
Cold Weather Outdoors:
Use as a next‑to‑skin winter layer for skiing, hiking, trekking, mountaineering. Retains warmth 63% better and dries 65% faster to prevent chill.
Recovery:
Wear 1–2 hrs post‑training or in the evening to accelerate neuromuscular recovery (clinically improved at 24–48h).
Travel & Daily Wellness:
Wear during long flights, commutes or sitting periods for improved microcirculation and reduced stiffness.
Multi‑Day Adventures:
Merino + infrared allows multi‑day wear, naturally odor‑resistant and thermoregulating. Ideal for trekking and overnight expeditions
The Science Inside KYMIRA Infrared
What it is
KYMIRA’s patented KYnergy® infrared textile embeds a matrix of bioceramic minerals into each fibre. These minerals capture body heat and convert it into far infrared (FIR) light in the 6–14 µm range, a wavelength shown in clinical literature to penetrate tissue and stimulate beneficial biological responses that support circulation, oxygenation, energy production, and recovery.
How it works (step by step the headlines)
1. Energy conversion: Body heat → absorbed by mineral matrix → re emitted as FIR (6–14 µm).
2. Nitric Oxide Activation → Vasodilation
FIR exposure is linked to increased nitric oxide availability, promoting local vasodilation and improved micro circulation.
3. Enhanced Oxygen Delivery (tcPO₂)
Independent tcPO₂ studies show that FIR garments raise tissue oxygenation, supporting aerobic energy pathways at a lower physiological cost.
4. Mitochondrial efficiency: FIR accelerates cellular energy (ATP) production, aiding sustained output and reduced fatigue.
5. Improved Biological Signalling (Adaptation Support): Exercise studies show FIR garments activate signalling pathways related to mitochondrial biogenesis and angiogenesis
6. Thermal Comfort & Temperature Balance
FIR helps stabilise micro temperature during and after exercise, while the textile maintains breathability and moisture management.
And more...
Why it matters for performance
- Increased Power, Strength & Endurance Capacity
Improved oxygen delivery, faster aerobic system activation, and more efficient ATP energy production, combined with reduced oxygen consumption requirements, support higher sustained intensities and greater total work output, increased average power, stronger muscles, better neuromuscular efficiency, increased explosive power, coordination. In clinical trials by the University of Loughborough, wearing KYMIRA Infrared has been shown to improve athletic performance by up to 8.7% from first wear.
- Better Movement Quality & Soft Tissue Readiness
Enhanced local circulation and oxygenation help prime muscles to be stronger and more flexible, improving mobility, reducing stiffness, and supporting more consistent movement patterns during sessions. Clinical trials show users have better control and stability during high-speed movements, alongside increased jump height and grip strength.
Greater acute skeletal muscle adaptive responses during exercise, with increased mitochondrial and angiogenic signalling. Leading to quicker training adaptions biologically.
- Rapid in-session recovery: The same mechanisms support repair — removing waste products like lactic acid quicker, reducing muscle micro-tears that create DOMS, reducing in-session fatiguing and inflammation marker metabolites, and activating the pain and inflammation modulating pathways, reducing feelings of soreness.
Why KYMIRA Supports Injury Prevention
Enhanced local circulation and oxygenation help prime muscles to be stronger and more flexible, improving mobility, reducing stiffness, and supporting more consistent movement patterns during sessions. Clinical trials show users have better control and stability during high-speed movements. This prevents the creation of micro muscle tears that contribute to DOMS, and to larger soft-tissue injuries.
- Improved oxygenation supports efficient muscular contraction and reduces fatigue related injury risk.
- Cellular energy support (enhanced energy ATP production), reduced aerobic pathway and oxygen use, greater endurance and reductions in fatiguing metabolites in session, supports stable movement patterns and reduces compensatory mechanics from tiredness.
- Temperature regulation helps prevent cold related tightness and maintains muscle compliance.
- Accelerated recovery mechanisms, reductions in fatiguing metabolites, and reductions in inflammatory markers during and between sessions, reduce cumulative tissue stress experienced in session.
Increased angiogenic signalling and mitochondrial angiogenesis support quicker training adaptions for safer movements.
Why it matters for recovery
- Faster post exertion neuromuscular restoration & readiness
Peer reviewed athlete research shows that recovering in KYMIRA FIR garments can deliver highly significant neuromuscular recovery improvements at 24–48 h, compared to placebo. Objective markers of readiness to perform again after the prior session, show next athletic performance is significantly better following recovery in KYMIRA Infrared. Wearers are in a better biological state and have reduced physiological stress in objective measures.
- Reduced feelings of DOMS, soreness and inflammation.
Peer-reviewed research shows using KYMIRA Infrared significantly reduces athletes experiences of DOMS, and modulates pain relief and anti-inflammatory pathways, actively reducing both, with natural effects.
Passive, non powered recovery you can wear immediately after training, during travel, and overnight—no settings, no sessions to book—drives consistent use and better outcomes.
- Increased Circulation, Oxygenation & Quicker soft-tissue Repair
The observed tcPO₂ rise within 30–90 min aligns with the post session window when tissues need oxygen for remodelling and waste clearance, supporting reduced next day heaviness and smoother movement quality. This acceleration of recovery processes, continues as long sa your wear KYMIRA.
- Acute Skeletal Muscle Adaptive Responses During Recovery
Clinical studies show significantly increased mitochondrial and angiogenic signalling showing increased angiogenesis, neuromuscular training adaption results.
Learn more in our Science area
Model is wearing: Size Large
Model's height: 183cm / 6'0''
The size charts below detail the relevant sizing or points of measurement for all of our products. Our garments do not need to be tight and against the skin for our infrared technology to work, so we suggest fitting to your personal preference. If you are looking for a looser fit, then size up from the guide's suggestions.
Men’s Sizes
Top (Chest)
XS 34"" - 38""
S 36” - 38″
M 38″ - 40”
L 40″ - 42”
XL 42“ - 44”
XXL 46″ - 48”
A full size chart is available in our footer.
FABRIC COMPOSITION
50% KYnergy Infracycle Polyester
50% Merino Wool
CARE INSTRUCTIONS
Gentle cool or hand wash, no softeners, air dry. Do not tumble dry.
Preserve fibre performance and knit structure.
KYMIRA Men's Infrared Ecoknit Merino Baselayer
The Women’s Infrared Ecoknit Merino Baselayer is KYMIRA’s lighter, more versatile long‑sleeve merino baselayer, engineered for athletes and outdoor explorers seeking natural comfort with science‑backed performance benefits. Made using fully recycled KYnergy® Infracycle™ infrared technology and sustainably sourced Merino Wool, the garment actively enhances circulation, oxygenation and muscle readiness to improve performance and accelerate recovery.
Its 3D seamless knit ensures a smooth, irritation‑free fit, while cooling zones under the arms and across the shoulders keep your temperature balanced during any activity — from winter running and alpine hiking to travel, training and all‑day wear.
The breathable, quick‑drying merino blend naturally manages moisture, resists odour and provides next‑to‑skin softness you can rely on for multi‑day adventures. Expandable side and arm panels offer adaptive flexibility, making it a perfect fit for dynamic movement or layering beneath outerwear.
Wear it as a light knit jumper alternative or as a performance baselayer — the infrared technology works continuously to boost recovery, reduce fatigue, support tissue repair and help you feel prepared for tomorrow’s session.
Use Cases
Performance Training (All Seasons)
- Lightweight merino + infrared boosts warmth when you’re cold and disperses heat when you’re warm.
- Enhances blood flow and primes muscle elasticity for better performance and reduced soft‑tissue injury risk.
Hiking, Trekking & Outdoor Adventure
- Ideal for multi‑day trips thanks to merino’s natural antimicrobial properties.
- Cooling zones and breathable Ecoknit construction adapt to terrain, altitude and effort.
Everyday Comfort & Travel
- Feels like a light knit jumper you can wear on its own or as a base layer.
- Seamless finish offers all‑day comfort for commuting, travelling or working outdoors.
Recovery & Wellness
- Infrared increases nitric oxide activity, improving circulation, oxygenation and tissue repair — accelerating recovery after training or long days on your feet.
Who It's For
- Active women training in variable or cool conditions
- Hikers, outdoor enthusiasts & winter adventurers
- Wellness‑focused users seeking infrared recovery benefits
- Those wanting a light, soft, climate‑responsive merino layer with scientifically backed performance advantages
Key Features
- Cooling zones underarms & shoulders for thermoregulation
- Fully recycled KYnergy® Infracycle™ infrared fibres for circulation & recovery enhancement
- Seamless 3D knit construction for comfort and reduced friction
- Expandable side and arm panels for a flexible, contoured fit
- Breathable & quick‑drying merino blend for multi‑environment use
- Sustainably sourced Merino Wool for softness, odour resistance & moisture management
- Lightweight warmth suitable for training or layering
- Infrared‑driven performance boost: improves elasticity, endurance & injury‑prevention
Protocols:
Warm‑Up:
Wear 15–20 mins before activity to boost circulation, warm muscles quicker, and reduce cold‑weather injury risk.
Performance:
Wear throughout training for enhanced oxygenation, thermoregulation and endurance. Works in −35°C to +48°C environments.
Cold Weather Outdoors:
Use as a next‑to‑skin winter layer for skiing, hiking, trekking, mountaineering. Retains warmth 63% better and dries 65% faster to prevent chill.
Recovery:
Wear 1–2 hrs post‑training or in the evening to accelerate neuromuscular recovery (clinically improved at 24–48h).
Travel & Daily Wellness:
Wear during long flights, commutes or sitting periods for improved microcirculation and reduced stiffness.
Multi‑Day Adventures:
Merino + infrared allows multi‑day wear, naturally odor‑resistant and thermoregulating. Ideal for trekking and overnight expeditions
As Used In
“As a recovery protocol we have seen a 25% reduction in perceived pain… 33% reduction in stiffness…"
Bob Stewart
Head of Medical, International Rugby
“Since using KYMIRA I’ve noticed that I just haven’t been as sore… I’ve been waiting for the DOMS to hit but they just haven’t.”
Brinn Bevan
GB Olympic Gymnast
