If you're in the market for something to mute cymbals while practicing, might I recommend Cymgard. Bought these online and was blown away at how well they worked. (*short video in comments*) :
Vic Firth Rock Version Drum and Cymbal Mute Pad Set: 12”, 13”, 14”, 16", 22" Drum Pads Plus Hi-hat and 2 x Cymbal pads : Amazon.de: Musikinstrumente & DJ-Equipment
SPL Hi-Hat Cymbal Mutes | Sound Percussion Labs
Evans SoundOff Rock Set Drum Mutes – Sweet Muzic Pro Audio