Foul Weather MTB Trousers on Test: The Dirtlej Trailscout Half & Half Long

Dirtlej has expanded its innovative half-and-half design from shorts to full-length mountain bike trousers with the Trailscout Half & Half Long. These trousers aim to balance weather protection with breathability, featuring waterproof panels where riders need it most and lighter, more breathable fabric elsewhere. Designed for colder months, they offer a compromise between warmth and ventilation, with a water column rating of 20,000 mm on the rear and lower front panels and breathability rated at 20,000 g/m²/24h on the front thighs. The fit and sizing of the Trailscout Half & Half Long are distinctive, with sizes ranging from XS to XXL and available in both Straight and Loose cuts. Unlike typical sizing, Dirtlej’s system primarily adjusts for length rather than width, meaning the Loose versions are significantly wider than the Straight ones. This nuanced sizing approach requires careful consideration when purchasing, especially online, but the detailed size chart helps riders find the right fit. The trousers accommodate knee pads comfortably without appearing bulky, and the adjustable waistband ensures a secure, custom fit. Practical features enhance the Trailscout’s appeal for trail riders. Long leg zips allow for easy removal and donning over shoes and knee pads, while reinforced panels at the seat and ankles improve durability. Ventilation openings help regulate temperature, and four pockets—including two zipped ones—offer ample storage for essentials. However, the Velcro ankle straps, while functional, can catch on other fabrics if left open, which may cause inconvenience during wear or washing. Comfort and material quality are notable strengths of the Trailscout Half & Half Long. The fabric feels soft and flexible against the skin, providing durability without sacrificing comfort. There is sufficient room for layering underneath on colder days, and silicone grippers inside the waistband keep the trousers firmly in place during active riding. Overall, the trousers deliver a well-rounded package for riders seeking reliable weather protection combined with practical trail-ready features. While the Trailscout Half & Half Long requires some trade-offs inherent to waterproof and breathable clothing, it performs well in real-world conditions. Dirtlej also offers a fully waterproof Trailscout variant for those prioritising maximum protection. For riders looking for versatile, durable MTB trousers that balance dryness and ventilation, the Trailscout Half & Half Long presents a compelling option, especially when carefully selected to match individual sizing needs.