Whether you're training for a marathon or just enjoy a relaxed run, the Brooks Glycerin 21 is the ideal all-round running shoe for the neutral runner. Whether you're heading out for a 5km or a slightly longer endurance run; the Glycerin can do it all. The shoe is suitable for both novice and experienced runners. Get the most out of every step with this all-round running shoe! Midsole DNA LOFT v3 is the foam that is incorporated into the midsole of the Glycerin 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. 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. Wear sole 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. Start your running session with the Brooks Glycerin 21 and pursue your goals!