FORTIS LAYERING SYSTEM
Built as a system, not just clothing.
Fortis isn’t built as a collection of individual garments; it’s built as a complete system.
Every piece we design has a clear purpose. Each layer works independently, but more importantly, it works in combination with others to adapt to changing conditions, environments, and activity levels.
Rather than relying on one heavy item to do everything, a layering system gives you control. You can add, remove, or adjust layers as the weather shifts or your output changes, keeping you comfortable, protected, and ready to perform at all times.
From dry summer days to relentless rain and extreme cold, Fortis clothing is designed to move with you, regulate temperature, and provide protection exactly where and when it’s needed.
This page breaks the system down into four simple setups showing how each layer works together in real-world conditions.
Dry & Warm
In dry, warmer conditions, comfort comes from simplicity and breathability.
The Dry & Warm system is built to keep you cool, unrestricted, and comfortable throughout the day. Lightweight base layers sit soft against the skin, allowing airflow while managing moisture during steady movement. Durable, breathable trousers provide protection without trapping heat, while optional mid and outer layers can be added for early starts, cooler evenings, or light wind.
This setup is designed for long days in consistent conditions where overheating is the biggest challenge, and freedom of movement matters most.
Each piece works on its own, but together they create a system that keeps you cool, comfortable, and ready to stay out longer.
Tap the layers below to see the exact products that make up the Dry & Warm system and build your setup for the conditions ahead.
Dry & Warm Base Layer
Dry & Warm Trousers
Dry & Warm Mid Layer
Dry & Warm Outer
Cool & Active
When temperatures drop but your activity level stays high, the priority shifts to balance; staying warm without overheating.
The Cool & Active system is built to regulate body temperature while you’re on the move. Breathable base layers manage moisture and keep your skin dry, while lightweight mid and insulation layers provide warmth without bulk. Outer protection can then be added as needed, depending on exposure to wind or changing weather.
This setup is designed for constant movement, whether you're covering ground, working hard, or navigating unpredictable conditions. Each layer works to prevent heat build-up while still protecting you when you slow down or stop.
It’s a system that adapts in real time, giving you the flexibility to stay comfortable, focused, and performing at your best.
Tap the layers below to see the exact products that make up the Cool & Active system and build your setup for the conditions ahead.
Cool & Active Base Layer
Cool & Active Mid Layer
Cool & Active Insulation Layer
Cool & Active Outer Layer
wet & tough
When the weather turns, protection becomes everything.
The Wet & Tough system is built to keep you dry, shielded, and operational in relentless conditions. Fully waterproof outer layers form a barrier against rain and wind, while durable over-trousers and bibs protect your lower half from prolonged exposure and rough terrain.
Underneath, your core layers continue to manage temperature and moisture ensuring you stay comfortable, not clammy, even during sustained effort. The system is designed to handle everything from sudden downpours to full days in driving rain.
Every piece is made to work hard, resist wear, and keep performing when conditions are at their worst.
Because when it’s wet and unforgiving, your kit shouldn’t be the weak point.
Tap the layers below to see the exact products that make up the Wet & Tough system and build your setup for the conditions ahead.
Wet & Tough Jackets
Wet & Tough Trousers
Wet & Tough Alternative Options
Extreme Conditions
When conditions become unpredictable, severe, or prolonged, preparation is everything.
The Extreme Conditions system brings every layer together into one adaptable setup giving you full protection across temperature, terrain, and exposure. It’s built for environments where you need to carry options, adjust on the move, and stay comfortable through constant change.
From high-output movement to long periods of standing still, this system allows you to regulate heat, manage moisture, and layer up or down as needed. Insulation, waterproof protection, and durable outerwear all work in combination ensuring nothing is left exposed and nothing is left to chance.
With the right layers in your day pack, you can respond instantly to shifting weather without compromising performance.
This is the system designed for when failure isn’t an option and when your kit needs to work as hard as you do.
Tap the layers below to see the exact products that make up the Wet & Tough system and build your setup for the conditions ahead.
Extreme Base Layers
Extreme Mid Layer
Extreme Insulation Layer
Extreme Jackets
Extreme Trousers
Extreme Extras
Extreme Stand Alone Coats
No matter the conditions, the principle stays the same. The right layers, used the right way.
Fortis products are designed to perform individually, but it’s when they’re combined that their full capability is realised. By building your system around the environment, your activity, and the demands of the day, you stay in control, not the weather.
If you’re unsure how to build your layering system or which pieces are right for you, our team is always on hand to help. We understand how this kit is used in the field and can guide you towards a setup that works for your conditions and your way of working.
Because in the field, adaptability isn’t a luxury... it’s essential.