Your therapist has prescribed you with a throttle therapy session. So get your bike out. 
Proudly Printed In The USA
100% cotton (fiber content may vary for different colors)
Medium fabric
Classic fit
Tear-away label
Runs true to size
                               S            M           L           XL         2XL       3XL        4XL        5XL
Width, in              17.99     20.00     21.97     23.98     25.98     27.99     30.04     31.97
Length, in            28.00     29.00     30.00     31.00     32.00     33.00     34.00     35.00
Sleeve, in             7.24        7.76       8.23       8.74       9.25       9.76      10.24     10.75