Thunderclaps are comprised to 3 flat flaps. The outer flaps are flexible and made from high impact poly carbonate material.  The inner flap a stiffer maple wood slat fitted with 4 holes to reduce weight and increase the volume of the ‘clap’.  The outer flexible flaps on either side of the core maple slat can slap the centre maple to produce a loud clap that you can incorporate into an endless dynamic of rhythmic ideas off and on your percussion set up with the snap of wrist. 

Thunderclaps are wider and the holes are larger than on the Drumclaps, therefore sound  produced is lower in pitch.