The Science of Comfort
Comfort Is More Than Warmth
Riders often focus on temperature when choosing gear. But temperature alone doesn't determine comfort.
The real challenge is managing a rider's micro-climate.
A micro-climate is the thin layer of protective air surrounding the body. It's constantly changing based on rider activity, environmental conditions, moisture levels and layering choices.
When a rider becomes too warm, overheating leads to perspiration. When that moisture remains trapped against the body, it accelerates heat loss. When riders become too cold, blood flow begins shifting away from extremities to preserve core temperature.
Effective layering helps riders maintain balance between these extremes.
The goal is simple:
- Manage moisture
- Balance heat
- Protect against the elements
This philosophy continues to drive the development of KLIM's layering systems.
The Science Behind Layering
Effective rider comfort comes down to three controllable variables.
Moisture Management
Sweat left on the skin quickly becomes a source of cooling.
Mid-layers work with technical base layers to continue moving moisture away from the body and maintain rider comfort.
Heat Balance
The amount of heat the body produces must be balanced with the amount of heat it loses.
Traditional insulated mid-layers and electric heated mid-layers provide different solutions for maintaining this balance.
Weather Protection
Outerwear provides the barrier against wind, snow and moisture.
However, an outer shell can only perform effectively when the layers underneath are functioning properly.
A complete comfort system requires every layer to perform its specific role.
Introducing The New Fall Mid-Layer Collection
For Fall 2026, KLIM expands and refines its mid-layer lineup with redesigned traditional mid-layers and an expanded heated apparel offering.
The new collection includes:
- Electric Heated Mid-Layers
- Traditional Mid-Layers
Electric Heated Mid-Layers
Electric heating technology provides an additional layer of comfort management by allowing riders to actively add warmth when needed.
These products are designed for:
- Cold-weather trail riding
- Long-distance riding
- Riders exposed to prolonged cold conditions
- Variable temperatures throughout the day
- Riders who prefer adjustable warmth rather than adding bulk
By delivering targeted warmth directly within the layering system, eFire products help riders maintain comfort without requiring excessively heavy insulation.
Rather than waiting to become cold, riders can proactively maintain a more stable micro-climate throughout the ride.
Key Benefits
- Adjustable warmth
- Targeted heat delivery
- Reduced bulk
- Layering versatility
- Improved comfort during extended exposure
Best For
- Cold-weather trail riders
- Long-distance riders
- Riders exposed to prolonged cold
- Riders who want adjustable warmth
- Lower-output riding situations
| Override eFire Vest |  |
| Override eFire Jacket |  |
Traditional Mid-Layers
For riders producing significant body heat through active riding, breathable insulation often provides the optimal balance.
The redesigned traditional lineup focuses on:
- Lightweight warmth
- Moisture management support
- Breathability
- Layering versatility
- Mobility and comfort
These products function as the adjustment layer within the system, allowing riders to fine-tune insulation without sacrificing moisture transfer or freedom of movement.
For mountain riders, backcountry riders and aggressive technical riders, maintaining breathability can be just as important as adding insulation.
Key Benefits
- Breathable insulation
- Moisture management support
- Lightweight comfort
- High-output riding compatibility
- Versatile layering options
Best For
- Aggressive mountain riding
- Backcountry riding
- High-output riding
- Riders generating significant body heat
- Situations where breathability is critical
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Together, these products provide riders with multiple strategies for managing comfort depending on riding style, environmental conditions and personal preference.
Built Around The Science Of Comfort
KLIM's newest mid-layer collection was developed around a simple principle:
Comfort comes from controlling the micro-climate.
By providing riders with more options for managing moisture, balancing heat and adapting to changing conditions, the Fall 2026 mid-layer lineup helps riders stay comfortable over a wider range of temperatures, riding styles and environments.
Whether riders choose active heating through the new eFire products or lightweight breathable insulation through the redesigned traditional collection, each piece is engineered to work as part of a complete KLIM layering system.
Control Moisture. Balance Heat. Adapt To The Ride.
Master Your Micro-Climate.