The Mille GT platform is a designed for training and endurance cycling, as well as those cyclists who don't enjoy the most restricted raceFit options. Every great bibshort concept demonstrates a commitment to rider comfort, and for most cyclists the waist transition to the upper in the front matters most, then how the bib strap system feels on the skin with just the right amount of stretch to support great fit and suspend the bib strap system from the back of the short lower section. The design team at Assos solved this in two efficient steps: One is with the details and fabrics applied in the zeroPressure waist.design This solution embodies the Assos C2 AEPD click-fit ethos with a secure hold on the sides and back, and a panel insert on the front stretches to accommodate aggressive positioning on the bike and deep breathing during the hardest efforts. The second is the latest Assos bib strap system, is appropriately named X-Frame, as it resembles an "X" down the back. offers a flat, smooth, supportive feel and uses a suspension engineered design to stabilize the main body of the short section and chamois insert.

Fabric-wise, the textile is Assos Type.429. Largely polyamide, which doesn't hold moisture, is durable, and when blended with Lycra (elastane), adds just the right amount of stretch, return, and compression. It is then flexible enough for streamlined, compressive fit and great support; with high breathability, despite being durable to everyday rides that add up to serious annual mileage. The final element is the Mille GT C2 pad insert, which delivers exceptional comfort and support with breathability and Assos construction technologies that make it truly special. The thermoformed 11mm thick superAir microShock foam takes the edge of indoors or out, and is very light weight. The designers use their 3D Waffle 3L insert to allow for more airflow and greater comfort, and that is now complemented by the goldenGate support zone that allows the insert to move with rider, somewhat independent of the short fabric.