The On Cloudmonster 2 in BlackFrost provides max cushioning, max propulsion, and a more sustainable build. This versatile runner is tuned for just about any run, with a speedy feel and huge levels of cushioning, making it ideal for anything from 5k to full marathons, tempo runs, interval training, recovery days or simple road runs. To give that propulsive feel, it uses dual density Helion Superfoam in the midsole, sandwiching a new nylon blend Speedboard which is shaped to enhance speed for a feeling of energy that comes alive. Total recycled materials increases to 24 for a more sustainable approach to performance, without compromising comfort. A reworked engineered mesh upper with lining is designed to enhance the feel, while reworked eyestays let you enhance your lockdown where you need it. Weight: 295g. Stack height: 35-29mm. Offset: 6mm. Engineered mesh upper. More sustainable including 92% recycled upper and less TPU than original. Dual density foam construction. Bounce board foam insert. Nylon blend Speedboard.