These are the fourth pair Ive bought in a week, and we finally have a keeper. I have a pair of Sams and had to go up to a 41. The price was a bit steep compared to the 10ish dollars for the foam ones but if you struggle with keeping them in a place as I did, give these a shot. They have a ridge where your toes bend but Its not in the right place for me. Be careful! AAA+++ Makes my arctis 5 feel brand new again! It almost made me late for work. I called Plantronics, and it took nearly a week for me to receive the part. It is of good quality but a bit too long for me.