These provide efficient energy transfer by always having firm and comfortable contact with the bottom and sides of the boat.  

Knee Pads = 7-3/4"L x 6-7/8"W base tapering from 1-1/2" to 1" 

Side Wedges = 7-3/4"L x 6-7/8"W base tapering from 2-1/2" 

"Knee Pads & Side Wedges w/ Adhesive" includes a 100 mL can of ,