PRODUCT DESCRIPTION 
Adds 3 inches to any Small, Medium and Large K9 Sport Sack Dog Carrier.
Made from quality foam. Built to last.
Removable and washable cloth.
WHO NEEDS IT?
In between-er dogs - i.e. wide body, but short
Growing dogs
Dogs that just need a little boost in their current size
WHAT SIZE DO I ORDER?
Each Booster Block size correlates with the size of K9 Sport Sack.
CAN I USE MULTIPLE BOOSTER BLOCKS?
Yes, you can. It is not recommended more than 2 in a K9 Sport Sack at a time.
THE BOOSTER BLOCK SEEMS TOO BIG TO FIT IN MY K9 SPORT SACK?
The Booster Block was designed to be a tight fit in the K9 Sport Sack to ensure a snug and sturdy fit while in use.