
A lift for everyday journeys, with room for a little adventure.
Keep your dog close on the commute, through town or when little legs need a break. The K9 Sport Sack Air combines a breathable carrier body with supportive straps for everyday transport, walks and moderate hikes.
Why choose the Air?
- Versatile daily use: a practical choice for public transport, errands and outdoor walks.
- Ventilated mesh sides: help airflow around your dog.
- Supportive fit: upgraded straps wrap around the dog, with an adjustable collar opening.
- Wide base: space for your dog and their tail.
- Everyday practicality: updated shoulder straps and a side pocket for a water bottle.
Choose the correct size
Maximum dog weight: 11.3 kg (25 lb). This is the Air model's capacity limit, subject to correct fit; it is not a weight-based size recommendation.
Check three things before choosing: weigh your dog; measure back length from the base of the collar to the base of the tail with your dog standing; and measure chest girth around the widest part of the chest, just behind the front legs. Use back length to choose your starting size, then check chest room and sitting height. Being below the weight limit does not guarantee a comfortable fit.
Between sizes or broad-chested? The manufacturer recommends sizing up where needed and using a suitable K9 Booster Block to achieve the correct sitting height. Ask us for help with your dog's back length, chest girth and weight before ordering if measurements fall between the ranges.
| Size | Dog back length | Fit note |
|---|---|---|
| XS/Small | Small: 33–41 cm (13–16 in) | For a back length of 23–30 cm (9–12 in), a suitable K9 Booster Block is needed to achieve the correct sitting height. Contact us before ordering so we can help you choose the right fit. |
| Medium | 43–48 cm (17–19 in) | Check chest girth and sitting height. |
| Large | 51–56 cm (20–22 in) | Check chest girth and sitting height. |
These are dog back-length measurements, not the dimensions of the backpack. Measure from collar to base of tail. The manufacturer publishes whole-inch ranges; for measurements in the gaps, broad chests or long legs, contact us with all three measurements before ordering. A booster block does not increase the maximum weight limit.
Watch: measuring and fitting your dog
Before your first outing
Introduce the carrier gradually with treats and short practice sessions. Follow the supplied fitting instructions, secure the safety attachments and check that your dog sits comfortably. Take regular breaks; K9 Sport Sack recommends 30–45 minutes at a time. For a dog with an existing health concern, check suitability with your vet.
Need a hand choosing? Message us on WhatsApp with your dog’s back length, chest girth and weight.