Finding the right size K9 Sport Sack for your dog is not an exact science. If your dog is in between sizes, has a wide but short body, or is still growing, the Booster Block will fit snugly in the bottom of your K9 Sport Sack to raise your dog by approximately 3 inches.

Features of the K9 Sport Sack Dog Booster Block

• Made of quality foam,
• Removable and washable fabric cover,
• Possibility of combining two Booster Blocks to raise up to 15 cm.

How to Choose the Right Size Dog Booster for Your Backpack

• The XS/S size can be used for both XS and S backpacks,
• The M/L size can be used for both M and L size backpacks.

K9 Sport Sack Warranty

K9 Sport Sack stands behind the quality of every product we sell. Each product has undergone rigorous research, development, and testing to ensure safe use for you and your dog. We understand that pets can be tough on things and K9 Sport Sack strives to make products that will last and withstand all types/personalities of dogs.

• The K9 Sport Sack Warranty includes, but is not limited to: manufacturing defects, product malfunctions, sizing issues, and incompatible dog personalities within 60 days of purchase,

• The K9 Sport Sack Warranty does not cover: damage caused by abnormal chewing, tearing or other degradation of the animal, as well as normal wear and tear due to use or use by dogs exceeding the weight and size limit set for each product.

If you have a warranty claim, please fill out the warranty form on this page and the K9 Sport Sack team will review it within 24-48 hours. If your product is found to be within their K9 Ruff & Tuff warranty, a new product(s) will be issued so you and your dog can get back to your adventures!