I started using this sleep mask 2 months ago and Ive been sleeping great! They make me feel like I have fairy feet they are so light. For those, including myself, who has a pudge I would recommend wearing a spanx with this waist trainer it’s not that long. 2 was nice and true again. having that option alone makes these worth any amount of ££££. Parts and directions were super easy and the whole unit feels so strong and high quality. But now that I have another earcup to compare the stock ones to, my eyes have been opened. Has an interesting rubber loop that catches the inside ridge of the ear, making it ride inside and not fall out easily. :) BUT seriously as soon as I stuck them on I had instant relief! Im not sure of durability as we have not used them for very long but I will use the remaining headphones for backup for next years students.