





🎒 Elevate your dog’s day trips with hands-free style and comfort!
The K9 Sport Sack Trainer Large is a lightweight, breathable backpack carrier designed for dogs with a 20-22” back length. Ideal for short, casual outings and early-stage training, it features ergonomic support, ventilated mesh panels, and trusted safety elements to keep both dog and owner comfortable and secure. Perfect for active millennials who want to seamlessly include their furry companions in everyday adventures.














| ASIN | B07XYK2CDK |
| ASIN | B07XYK2CDK |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #48,429 in Pet Supplies ( See Top 100 in Pet Supplies ) #82 in Dog Carrier Backpacks |
| Brand Name | K9 Sport Sack |
| Color | Iron Gate |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,207) |
| Date First Available | September 16, 2019 |
| Date First Available | September 16, 2019 |
| Department | unisex-adult |
| Department | unisex-adult |
| Item Dimensions LxWxH | 12 x 11 x 22 inches |
| Item Package Dimensions L x W x H | 12.36 x 10.04 x 3.66 inches |
| Item Weight | 1.04 pounds |
| Item model number | Train-BLK |
| Item model number | Train-BLK |
| Manufacturer | K9 Sport Sack |
| Manufacturer | K9 Sport Sack |
| Material | Nylon |
| Number of Items | 1 |
| Product Dimensions | 12 x 11 x 22 inches; 1.04 Pounds |
| Size | 12.0"L x 11.0"W x 22.0"H |
| Specific Uses for Product | Aggression Training, Anti-Anxiety and Behaviour Management, Interactive Play, Outdoor, Suitable for Adult pets |
| Style | Large |
| Target Audience Keyword | Dogs, dogs |
| Warranty Description | Activities with your pet can be inherently dangerous. Please measure pet correctly to ensure the highest level of safety and comfort. We are not responsible for any injuries involving you or your pet using the K9 Sport Sack. Please be responsible. |
A**M
Comfortable for both the pup and the dog parent
My pup is small so I ordered a small. I feel the sizing might be a little off because I’m not sure if she fits in it properly. She seems to be a little bigger in a size small than I expected. Even though I am unsure of the size, I will say this is the second carrier I’ve ordered from this seller. The bags are sturdy, comfortable to wear and my other small pup seems to enjoy being in his carrier when we are on the bicycle. I like that it has a water bottle holder on each size and it’s easy to get your pup in the carrier. The ventilation is good for my pups and they seem comfortable. Good quality zippers, not cheaply made, and great functionality for hiking, riding, or even walking around the store.
S**R
Great back pack
Great way to bring our dog with us 6.5 lbs She love to ride in it . It’s made very well.
A**R
My doggie “Kat” loves her bag
Although the pics don’t show this angle, I can tighten the shoulder straps to help boost her up more and she can look over my shoulder. Got this for my little dog who like to walk/hike with me but is getting older and can’t always hang in for the long haul. This is comfortable for both of us (although it’s warm), easy to get on off with help. I can get it on/off myself because I have a small 9lb dog, but it’s easier with help. I like the color too!
P**O
Read the size chart!
Great quality but too small
L**S
No waist strap on small
I debated between 3 or 4 stars. I like the pack. It works great for my puppy who will grow out of it quickly. My only complaint is, it does not have a waist strap. All the puppy’s weight is on your shoulders and for me that is a huge problem. Add a waist strap and I would have given it 5-stars.
R**A
Sturdy and good looking backpack for pup!
We got this backpack in the XS size for our 8 week old pup so that we could carry her around the neighborhood to socialize her before she was fully vaccinated. It fit her very well when she was 7lb and now she is 14 lb and nearing the end of her time in the backpack. We'll have to size up soon. We love how comfortable she looks in this backpack because it was specifically designed so that the pup would be in the sit position if you use it properly. Now that she's 14lb, her head and neck loll around a bit (also because she's a curious pup and likes to look around). We switch off between carrying her on back pack and using the backpack as a front carrier. Both work very well. We use the side pocket for holding our treat pouch. Very easy to use and we love that there is both a collar/harness clip inside as well as a "locking" feature to the zipper so that the zipper won't accidentally get pulled down when the pup is inside. This one is pretty good for walks, and the same brand as even more heavy duty versions if you're trying to bike/hike with your pup. Love this brand and so glad we had this as part of our pup's early days!
B**L
Don’t buy
Don’t use for dachshunds they can remove their legs, also don’t buy if you’re a man with shoulders I almost had to cut the shoulder straps off of me to remove it they are far too small
G**S
Secure Way to Bring My Dog on a Bike Ride
My dog weighs about 12 pounds, has a degenerative back condition, and loves any kind of outing where he can get the wind in his face. I've tried other brands but this backpack provides the most security for my dog. He seems to be comfortable, and really seems to like the way the backpack positions him high up on my shoulders so he can see over them. It is reasonably comfortable for me as well. I use it to take my dog on bike rides, which works well because I lean forward over the handle bars which improves his view of the world and makes him feel more like he is riding on top than behind. It can be a little challenging to get him into the backpack, but I think this is a reasonable trade off for the security it provides. It has adjustable straps to keep the sack from unzipping and to support the dog's back. One final note to the young men who might be considering this product: a cute dog in this pack riding on your back will definitely get you noticed by the young ladies!
C**A
Excelente mochila, los perritos van muy cómodos con su cabeza libre para ver hacia adelante y sus patitas sin lastimarse. El único inconveniente que tuve las dos veces (compré 2 mochilas por separado), es que mi dirección la había anotado mal, las dos veces. No por cuestión de Amazon, supongo que directo del remitente. Y por consiguiente, mi producto estaba perdido por dias.
P**P
Very happy with purchase, after many months of use. Quality stitching, zippers and materials. The secondary lower strap to support your dogs hind legs and lower back is a game changer, especially if your dog suffers from arthritis and benefits from being securely strapped. Other carriers I’ve tried did not have this. The straps fit well, are adequately padded and allow the carrier to be high enough so that your dogs head can rest on your shoulder. If I had to change anything I would add storage pockets on both sides (only one side has one) with a zipper.
A**R
Awesome bag for our Frenchie
N**8
I was looking for a backpack to carry our 8lbs girl and this was the one. I measured her before ordering and it fits her perfect. They have a spot on the front of the bag to add a patch, I went on the US site to custom order a name tag but the shipping was outrageous so I ordered a name tag from someone local instead.
A**O
get 1 or 2 sizes bugger, its too small for what is advertised
Trustpilot
5 days ago
1 month ago