Sizing - 2021-02-04 9:56:41 - K9 Sport Sack Wholesale

*Site and pricing for retailers only*


First things first. Make sure you know your dog's measurements.

GIRTH - Measure around the widest part of the dog's chest.

LENGTH - Measure from the collar to the base of the tail.

If your measurements don't line up perfectly with one size or have a growing dog, don't worry. Select the size that accommodates your largest measurement. You can always add a Booster Block to make up for lack of length.

Click the carrier below to see its corresponding sizing guide

Need some extra help? Check out our Sizing Guide video below!

Buy with Confidence

Customers with an imperfect first experience report that exchanging for the correct size resolved most issues.

If your carrier is difficult to zip, seems to scrunch your pet or he/she extends too far out of the collar enclosure, try the next size up with a Booster Block and you’ll likely be surprised that your passenger will settle right into place.

If your pet is drowning in fabric, sliding down inside the bag or able to exit through a top that is too loose, exchanging for a smaller size or fine-tuning with a Booster Block is likely to do the trick.

Additionally, most pet owners who return their K9 Sport Sack eventually make a second purchase as the excitement to take their best friend on adventures weighs heavily on dog and owner alike. According to a survey conducted in 2018 the majority of all customers who ultimately kept their second K9 Sport Sack reported that their dog needed 1) the correct size and 2) a bit of additional training in order to make the K9 Sport Sack work for them.

Please Don't Give Up

We understand that no sizing guide is as accurate as a product in hand so we have made exchanges simple and fast. Reach out to our knowledgeable customer support team at or (385) 515-8908 for any advice, tricks, hints or ideas to take your adventure off the leash.

Click here to customize and order custom K9 patches