I wondered if the sole would be similar to "Birki" slides I have purchased which do not have the same give to them. The directions were not very clear, but I studied the product and found it easy to install. Early March of this year the first pair developed a hole in the sole in the heel of one of the slippers. Replaced my old one with this and comfort was back to its original form. the volume easily (hold down), fwd or rev to find songs. Its It was fairly easy to assemble, however it came with no instructions. It felt so light. Straps are easy to take on and off which I appreciate greatly. I love, love, love the charging port. I have an EZ curl bar from them, olympic dumbell handles and plates, and they all work just fine.