Extremely Cost Effective
  Extremely Durable
  Will not absorb liquid
  Does not need laundering
  Will not stain
  Does not leak
  Comfortable for your pet  
  Does not retain any odors
  Easy to put on and take off
  Easy to adjust the fit
  Uses inexpensive panty liners ( Liners stay stuck through out the usage, but are easy to remove once soiled)