These are well made, i dont have them for a long time, but seems like they'll last. if you have loud cymbals which you want to make less loud (for smaller venues) this is great solution. Also i find them handy for recording sessions cause these pads makes sound of my 21" rides more round and focused. The only disadvantage is the price. I would love to have Cympads in all different dimensions and colors, but i dont feel it is worth it considering the price. That's the reason i bought only these huge ones cause ride sound control is main issue that i have with cymbals.
It helps you to control the volume and sustain of your cymbals. But... after a certain size it feels more like an obstacle than a helpful tool. Pulls way too much back on the swing of the cymbals. the 50 is great, 60 is the top. This is waaaaay too big.