He's a assistance as the wheels of my e-bike were too big for the holder with the straps. Within one minute of the phone call the gentleman on the other end of the phone was able to identify that there are XL straps and I ordered a set of those and just waiting for them to come in but it was very quick easy and efficient and the individual was very knowledgeable about what my question was in reference to User's recommendation: My recommendation is if you have any questions or concerns to please call the thule helpline they are excellent.