Why it matters
The Trainer has a minimal frame and mesh sides to introduce dogs to riding in a backpack. K9 Sport Sack sizes by back length: the large suits dogs 20–22 in from collar to tail base, such as small Australian Shepherds. It is meant for quick outings like commuting, cycling, vet trips or hot pavement, and keeps the brand's standard safety features.
Who it's for, and who should skip it
Good fit if
- Short outings
- Introducing a backpack
- Hot pavement
Look elsewhere if
- Long hikes
- Very heavy dogs
- All-day carrying
Pros and cons
Pros
- Head-out design
- Light
- Sized by length
Cons
- Short-term use
- Minimal padding
- Price
Limitations to weigh
- Weigh your dog in the carrier against the stated limit, and do not carry more than is comfortable for you.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Price seen | $59.95 | Retailer |
|---|---|---|
| Dimensions (seller) | 16.93"L x 11"W x 22"H | Retailer |
| Material | Nylon | Retailer |
| Features (seller) | Divider Included, Outdoor Safe | Retailer |
| Model number | Train-Hblu | Retailer |
| Product weight | 1.1 pounds | Retailer |
| Closure | Zipper | Retailer |
| Dog size | Large | Retailer |
| Uses (seller) | Hiking | Retailer |
| Max. dog weight (seller) | 30 pounds | Retailer |
Alternatives worth comparing
More carriers, strollers & bike gear we cover
- Lollimeow Pet Rolling Carrier $59.99 seen
- K9 Sport Sack Air 2 $99.95 seen
- Little Chonk Maxine One Dog Backpack Carrier $125 seen
- K9 Sport Sack Knavigate $199.95 seen
Final verdict
A handy carrier for quick trips.
Where to buy
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$59.95Retailer price. Prices change; check the current price before you buy.
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Questions buyers ask
How do I size the K9 Sport Sack Trainer?
By collar-to-tail-base length; large is 20–22 in.
Is it for long hikes?
No; it is for casual, short-term use.