Since theyre fully in ear buds, they really block out surrounding sounds well. The one feature I wish were different is the mute function. Excellent quality and will continue to buy as long as they keep making them. I love the grippy bottoms and the Velcro strap- super toddler friendly. The maximum spreader width barely makes the 48" claim as it is. I work in a kitchen and the floor is constantly wet, and these are not very safe in that aspect, but I dont run around and usually I am very careful as to where I put my feet. I ordered a size (US) 10 due to the 9. The lid have 2 flip tops, one for shaking and another to pour. Unfortunately, the mounting plate lends itself to an oval chainstay and the overall casting / machining of the product is rough. I have wanted this style since last year.