Whatever your running level, the Brooks Glycerin GTS 21 is the ideal anti-pronation all-round running shoe. No matter what pace you run - a 5k or a long run - you can rely on the Glycerin GTS shoe. Go for a completely new running experience with this all-round running shoe! Midsole DNA LOFT v3 is the foam that is incorporated into the midsole of the Glycerin GTS 21. The soft foam has an innovative character compared to the previous version of DNA LOFT. Nitrogen has been incorporated into the cushioning material to optimize responsiveness and cushioning. The foam has Brooks' DNA technology, where the foam adapts to your running style. This means the shoe has a cushioning foam that ensures a smooth transition from heel to toe. The GuideRails in this shoe help your hips, knees and joints move naturally. As a result, in the event of overpronation, guidance will be provided by the GuideRails to help your feet move in the correct line and movement. This puts less pressure on the knees, which reduces the risk of injuries. Finally, the ORTHOLITE insole provides soft step-in comfort and long-lasting cushioning. The sole consists of open cells, which makes the sole breathable and ensures that your feet stay cool. Upper The airmesh upper of the shoe gives your feet the comfort they deserve while running. Airmesh has a ventilating function and encloses the foot comfortably. 3D Fit Print technology was used to design the upper. This technology adds extra structure in strategic places and increases the flexibility of the upper. Recycled materials have been used to produce the upper, sustainability and comfort come together in this shoe. Outsole The shoe has a RoadTack outsole, made from a mix of rubber and recycled silica. In addition, this outsole technology from Brooks is durable and resilient to compression, making them extra long lasting. Put on your Brooks Glycerin GTS 21 shoes and prepare to push your limits!