I use it mostly for transporting a paddle board. Cons: Im giving this 4 stars because first impressions were just ok. At first, I thought it was a glitch with the board. Not a sturdy work of engineering. I have plantar fascia & Achilles issues so I purchased these since I was in need of a new pair of slippers. Love FitFlops wish they made more men?s loafers like this. that said I gave them to my mum as we have the same size feet (different shapes) and she liked them. my car bike rack is Allen and wanted to give it a try. Most products leave a dark haze behind. Sony gave me an awesome product for an amazing price.