MAXXIS CROSSMARK II The Crossmark II retains the fast rolling properties of the original Crossmark while adding additional side lugs for more secure cornering DUAL COMPOUND Two distinct rubber compounds are used within the tread to offer a balance between rolling resistance and grip EXO A cut and abrasionresistant material added to the sidewalls of many of our gravel and MTB tires Suitable for use in a wide range of riding applications from gravel to XC to light trail duty E25 Tires with an E25 rating are suitable for light duty ebikes with assistance up to a maximum of 161 MPH QUALITY GUARANTEE 1Year Manufacturers Warranty