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K9 Booster Block
K9 Booster Block
K9 Booster Block

K9 Sport Sack

K9 Booster Block

$9.95 $9.95

Sizing your dog for a K9 Sport Sack® isn't an exact science. If your dog is in between sizes, has a wide body but short in length, or is still growing, the Booster Block fits snuggly in the bottom of your K9 Sport Sack to boost your dog up 3." It helps make the K9 Sport Sack experience more comfortable for you and your dog. 

Features
  • Constructed of quality foam
  • Removable, washable cloth cover
  • Use two blocks for a 6" lift
Sizing
  • XS/S are interchangeable between XS and S sized backpacks
  • M/L are interchangeable between M and L sized backpacks
  • XL backpacks require an XL Booster Block
  • XXL Bags require an XXL Booster Block
Shipping, Warranty & Returns

Shipping

Domestic orders: USPS Priority Mail shipping (average delivery in 2-5 days unless alternate method is selected). UPS 2nd Day Air shipping is also available.

International orders: UPS Worldwide Expedited shipping (average delivery in 3-5 days, but varies depending on location).

For more information regarding shipping click here.

Warranty

We cover manufacturers defects and product malfunctions for the first 60 days. Learn more about our policy here.

Returns/Exchanges

If you end up with incorrect sizing don't worry! All size exchanges within 60 days are free! Learn more about our policy here.

K9 SPORT SACK

Never Leave Your Best Friend Behind

Designed with veterinarian approval and years of customer feedback to be as comfortable and safe as possible for you and your pet.

How Does it Work?

Customer Reviews

Based on 103 reviews
85%
(88)
11%
(11)
3%
(3)
0%
(0)
1%
(1)
G
G.S.
Lucy in her K9

Lucy is a great hiking passenger.

User picture
w
w.P.
Optional Cushion

We have a Cavalier King Charles and found the small backpack was a little too large. We purchased a cushion and now he fits perfectly in the Backpack.

C
C.M.
Great addition

My sport sack is a size large, my dog fits perfectly in it when we ride bike. However, if we go for a walk she would sit a little too low. The booster block fixes that problem. If your dog, like mine, is in between sizes or just doesn’t sit quite right in the sack I would look into the booster. It’s definitely worth it.

Y
Y.

Great product, very convenient thing!

V
V.H.
works great

I got the small size of the air2 pack but it is a little big for my toy poodle. put this booster in and works great. so now I can use the pack for either dog, my toy poodle or my 17lbs schnoodle.

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