The Golfing Machine 3-D Impact Bag™ 
More than 12 applications – including Impact Fix
Easy to incorporate into lesson plan or practice routine
Indoor and outdoor use
Loops for affixing to ground with golf tees
Durable materials
Easy storage: small, portable, and collapsible
Carrying handle
Insert bottle of sand or water for added ballast
Familiarity with The Golfing Machine textbook not required for successful use
Available for immediate shipping

See how to use The 3-D Impact Bag by clicking on the video tab
on The Golfing Machine website frontpage