K9 Sport Sack Booster Block

A better fit can make all the difference.

The Booster Block is a simple insert for compatible K9 Sport Sack carriers. It raises your dog by about 3 inches, helping fine-tune the fit for dogs who sit between sizes, have a shorter back, or are still growing.

The small adjustment that matters
• Supportive foam construction
• Removable, washable cloth cover
• One block adds approximately 3 inches of height
• Two compatible blocks can add up to 6 inches

Choose the matching size
XS/S works with XS and S carriers. M/L works with M and L carriers. XL and XXL carriers each require their matching Booster Block size.

A final fit check
A Booster Block is an adjustment—not a substitute for the right carrier size. Once it is in place, recheck your dog’s seated position, comfort, and every closure before you head out.