I saw something like those recently on Amazon from the Howard Leight product line...couple different variations but close enough to warrant taking the time to wade thru Amazon's stuff.
Remember Aesops Fables outcome of the "Scorpion & and the Frog's" crossing the river when they get to other side
TooTaToo...We have MET the Enemy...and He is US !!... Pogo
Those who fail to learn from History are doomed to repeat it...George Santayana