This was the only pair I kept. I have managed to get it clamped on by attaching the device to clamp before placement, but this will no longer be able to be removed from the helmet without being un-clamped and doesnt appear to be a very strong hold anyway. Amazon is getting where you have to pay for shipping, unless you take to a UPS center, even withAmazon Prime. Look at my other reviews. They look lovely and are comfortable, normally a size 5 but bought a 4 they fit but half a size bigger would have been better, which you can’t get. The size is all wrong. I have never had this issue before with shoes, so I dont think its me. And it does and much more comfortably. Ich hoffe ich konnte Ihnen mit meiner Rezension helfen. It had a similar feel to my previous mouse (although surface was a little rougher) but was quite comfortable in my hand.