K9 Sport Sack Kolossus Large Dog Backpack Carrier (L–XXL) | Up to 36 kg

K9 Sport Sack Kolossus Dog Backpack for Large Dogs L–XXL | Free EU Delivery

The most powerful dog carrier – for medium & large dogs.

The Kolossus has been redesigned and is THE WORLD’S BEST backpack for large dogs, doubling as a backpacking pack.

Ideal for carrying medium to large dogs (9–36 kg), with top-of-the-line technology for pet and human safety and comfort.

✔ Suitable for dogs from 9–36 kg (L–XXL)

✔ 50–60 litre capacity – converts into a spacious backpacking pack

✔ Adjustable shoulder, torso and body sizing for a perfect fit

✔ Internal frame + padded, ventilated back panel

✔ Removable hip belt with hip pockets & waste bag dispenser

✔ Colours: Myrtle Green & Black

✔ Free delivery within the EU

Which size should I choose?

1. Measure the back length, from the collar to the base of the tail. The back length determines the size; weight is a guideline.

• L: 51–56 cm (up to approx. 27 kg)
• XL: 58–64 cm (up to approx. 32 kg)
• XXL: 66–74 cm (up to approx. 36 kg)

2. Take the build into account. Is your dog broad, muscular or stocky, or does it fall between two sizes (e.g. 57 cm or 65 cm)? Then choose the larger size.

Is your dog a little loose in the larger size? A K9 Sport Sack Booster Block (M/L version, suitable for the Kolossus) raises the base so your dog sits firmly and safely.

From experience: a customer with a 20 kg English Bulldog (broad chest, compact build) found XL with one or two booster blocks gave the best fit.

Adjustable shoulder and body sizing for all wearers and maximum comfort. When you’re not carrying your four-legged friend, use the backpack for your gear, with up to 60 litres of space. Ideal for serious use outdoors or in the city.

With features such as a detachable rain/sun hood, ventilation panels and weight distribution straps, the Kolossus is ideal for walks, hikes, travel and outdoor adventures. The premium choice for owners who want to take their dog everywhere, safely and comfortably.

Kolossus or Knavigate?

Features

• Collar enclosure with carabiner safety clip for the harness
• Angled cinch straps and lumbar support straps for the dog
• Adjustable shoulder and torso height
• Removable hip belt with hip pockets and waste bag dispenser
• Internal frame with inner padding for extra dog comfort
• Padded back panel with improved airflow
• Removable storage bag/dog back support with hydration port
• Storage pocket under the dog (sizes L and XL only)
• Weight distribution straps and sternum strap
• Side venting zippers and dual side pockets
• Wide base to accommodate your dog and its tail
• Detachable sun/rain hood for the dog
• Backpacking conversion loops plus utility webbing loops
• 300D ripstop Oxford polyester

Make your K9 Sport Sack Kolossus unique! Did you know the Kolossus has a Velcro area? Give your backpack its own character with our K9 Sport Sack Patches. From funny slogans to handy warnings: upgrade your dog’s gear in no time.

Safety

All K9 Sport Sack carriers are developed under the close guidance of animal professionals, veterinarians, dog trainers and outdoor product engineers to be ergonomic, safe and strong.