I have a pair of Block Surf Pads that are designed to fit on your existing rooftop crossbars to carry your surfboard or SUP. It attaches with the built in velcro. There is a small section where the stitching has come loose as you can see in the photo. It shouldn't affect the use of it as it's in the middle.
Email with a phone number and time to meet. Do not email asking "If this is available"