I was supposed to receive my sunglasses over three weeks ago. otherwise, the two triangles provides each 8-9 inches of pole space, and fold in easily. I bought them in January and wore them once on vacation in February. I have never had any issues with the width of my shoes and unfortunately these did not fit me as I had hoped. especially lows sound. This is a good basic mount. This wall mount was exactly what I needed. Well it fit perfect. Sound Quality: It is just an average sounding One. The Duet 50 are perfect for me in everyway.