Bogey Bros FORE! Driver Headcover Golf Training Aids The proprietary VIBRCOR high grade TPU The proprietary VIBRCOR high grade TPU is strategically placed in the deep undercut pocket to create a speed inducing and feel enhancing internal technology that creates a distinct feel of the clubhead and that dampens sound and shock at impact 2 gives players a familiar view from address and furthers the concept of offering a putter that performs like a mallet with the feel All the designs on our headcovers are embroidered so they’ll stay looking fresh for years to come keeping your driver protected against the elements