The strap was extremely scratchy and felt like it would have rubbed badly if worn for long, especially in hot weather. But after a not very long walk (maybe 6 miles) my big toes started to hurt quite badly and on getting home and removing the shoes I found my big toes rather battered and bruised. I wanted slip ons lol. On the other hand. Excellent sound quality, and I like the magnet feature. Yes, sand gets in the footbed but it washes out easily in the river. When I go riding, I like to listen to a energy playlist that Ive put together to help keep me going. i would NEVER buy this product. I wear a size 13 and saw in the comments that these fit small so I ordered a 14. same as the photo