Boost Half Zip Trail Shirt: The Revolution in Trail Running Apparel

For trail runners, every detail matters when the goal is to optimize performance. During long runs, carrying gels, flasks, phones, and other essentials items is inevitable. The big question arises: how to carry all of this comfortably without compromising performance? While running without extra weight is ideal, in long races, that’s simply not possible.

That’s why, in addition to technical trail apparel, it’s essential to have an accessory that makes carrying these items easier — whether it’s a running belt or a hydration pack. Some brands have tried to solve this by adding belts to shirts, offering a practical 2-in-1 solution. However, a new problem emerged: extra seams that cause discomfort during the run.

To solve this issue, Fyke developed the first shirt on the market with an innovatively integrated belt — the Boost Half Zip Trail Shirt. Instead of additional seams, the belt is a natural extension of the shirt’s structure, offering greater comfort, practicality, and a unique experience for runners.

Still not convinced? Let’s take a closer look at the exclusive benefits of this seamless shirt with integrated belt and see how it can truly transform your trail running experience.

Benefits of the Seamless Shirt with Integrated Belt

The Seamless Shirt with integrated belt is not just a design innovation, but a true revolution in how runners can prepare for the challenges of long-distance races. Let’s explore the key benefits that make this piece an essential choice for any trail runner.

Seamless Comfort
One of the main advantages of this shirt is its seamless construction. Unlike other models that incorporate belts with external stitching, Fyke has created a solution where the belt is an integral part of the shirt’s structure, resulting in a more comfortable piece with no skin irritation.

The Seamless technology provides a second-skin feel, eliminating the discomfort caused by seams or constant adjustments during the run.

Practical Carrying Solution

The integrated belt offers the convenience of carrying gels, flasks, and other essential items without the need for additional accessories. With balanced weight distribution, there’s no need for separate packs or belts, allowing the runner to focus solely on performance—free from extra weight or the discomfort of traditional gear.

Perfect Fit & Stability
The shirt is designed to provide an anatomical fit that naturally adapts to the body. With the belt integrated into the structure, it offers greater stability, preventing the weight of carried items from shifting or bouncing during the run. Its dynamic construction keeps everything securely in place, even on the most demanding trails.

Enhanced Safety & Visibility
Integrated reflective seams improve the runner’s visibility in low-light environments, such as dense trails, fog, or runs at dawn and dusk. Discreet and lightweight, these lines effectively reflect light without compromising comfort or performance—adding an extra layer of safety without the need for additional elements like reflective vests.

Breathability & Quick-Drying
The Seamless technology not only eliminates seams but also enhances ventilation, allowing the shirt to breathe along with the body. This means sweat is quickly absorbed and evaporated, keeping the runner dry and comfortable even under intense physical effort.

Controlled Ventilation
The half front zipper provides additional ventilation control, allowing you to easily adjust airflow based on training intensity and weather conditions. During moments of higher exertion, you can open the zipper to increase air circulation, while in cooler runs, keeping it closed helps retain warmth and comfort.

Extra Skin Comfort
Designed for maximum comfort, the Boost Half Zip Trail Shirt features an aloe vera treatment that hydrates the skin and helps prevent irritation during intense training sessions. In addition, its antibacterial finish minimizes odors, keeping the shirt fresh even after the longest runs.

Sustainability & Performance
Made with 77% recycled polyamide Q-Nova® by Fulgar, the Boost Half Zip Trail Shirt combines high performance with environmental commitment. This sustainable fiber reduces ecological impact while maintaining lightness, breathability, and durability for the most demanding trails—without compromising performance.

Smart Organization: Pocket Layout for Maximum Efficiency

One of the greatest advantages of the Boost Half Zip Trail Shirt lies in how the integrated belt was designed to meet the real needs of trail runners. The pocket layout has been carefully planned to ensure quick access, stability while running, and balanced weight distribution.

🔹 Two easy-access side pockets – Positioned on the belt’s sides, these pockets are perfect for smaller items you need to grab quickly, such as gels, energy bars, thermal blankets, or even your keys.

🔹 Front and back high-capacity pockets – For bulkier items like a soft flask, waterproof jacket, or even your phone, there are two compartments with extra stretch and space. The front pocket allows quick access while running, and the back pocket helps distribute weight evenly.

This thoughtful pocket arrangement lets you carry everything you need without compromising comfort or freedom of movement. Best of all? Everything stays stable—no bouncing or shifting!

Why We Chose Short- and Long-Sleeve Versions

The decision to offer the Boost Half Zip Trail Shirt in both short-sleeve and long-sleeve versions was made to meet the needs of runners in different weather conditions throughout the year. Since trail running is practiced in both hot and cold environments, it was essential to create versatile, adaptable options.

• Short Sleeve: Ideal for warmer days, the short-sleeve version offers maximum ventilation and breathability, helping keep the body cool and comfortable during training and races.

Its lightweight construction and moisture-wicking ability ensure sweat is quickly drawn away, avoiding discomfort.

• Long Sleeve: The long-sleeve version, on the other hand, was designed to provide extra protection during runs in lower temperatures or on more demanding terrains.

Its thermal regulation keeps the body warm in winter while still offering wind protection and shielding from external elements—without compromising breathability or comfort.

It’s also a great choice for sun protection during long summer races.

By offering both versions, the Boost Half Zip Trail Shirt becomes a versatile choice for trail runners all year round, regardless of weather conditions. Functionality and comfort were our top priorities, creating the ideal option for every stage of the run.

Runner Testimonials: What Athletes Say About the Boost Half Zip Trail Shirt

But there’s no better way to understand the real impact of this innovation in trail running than hearing from those who have already used the Boost Half Zip Trail Shirt. Here are some testimonials from runners who tested the shirt and shared what they appreciated most about the product.

The Boost Half Zip Trail Shirt is more than just a running shirt — it’s a true revolution in the world of trail running.With its innovative design that integrates a belt directly into the shirt’s structure, it offers greater comfort, freedom of movement, and practicality so you can focus on what really matters: your run.

Seamless technology, balanced compression, and high-performance materials ensure a perfect fit and maximum protection, whether for daily training or challenging races.Created with one goal in mind — to provide the best possible experience for trail runners — it combines performance with environmental responsibility, being made of 77% recycled Q-Nova® polyamide by Fulgar.

If you’re looking for a practical solution to carry your essentials items without compromising comfort, performance, or the environment, the Boost Half Zip Trail Shirt is the perfect choice for you.The future of trail running is here — it’s in your hands. Get yours now!