I am delighted with these earplugs; I bought several styles and these have definitely been my favorite for the purpose I want to use them for, which is to read in noisy places. They insulate very well. However, I recommend inserting it and turning it half a turn and pushing it in while attaching the ring; that's how the original ones are put on. I also like how they are presented and the quality they have. Additionally, the case is perfect and comes with a rubber strap that feels great to the touch. I've also tried them for sleeping and they are very comfortable and provide good insulation. I definitely recommend them.
