Round shield as used in badge/skills class work for annoying your parents by asking them to help you practise your punching at home!
 
Sold in singles, but ideally you need 2 in order to really be challenged with your target location skills.
 
Reinforced vinyl cover with dense foam filling
Two back handles, one adjustable
10" diameter, 3.5" thickness
 
Ask Sensei the best way to work with these pads at home!