---
product_id: 432888012
title: "K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green)"
brand: "k9 sport sack"
price: "C$56349"
currency: NIO
in_stock: true
reviews_count: 5
category: "K9 Sport Sack"
url: https://www.desertcart.ni/products/432888012-k9-sport-sack-kolossus-dog-carrier-backpack-for-small-medium
store_origin: NI
region: Nicaragua
---

# 60L dual-use capacity Supports dogs up to 80 lbs Ventilated airflow system K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green)

**Brand:** k9 sport sack
**Price:** C$56349
**Availability:** ✅ In Stock

## Summary

> 🎒 Carry your best friend in style—wherever life takes you!

## Quick Answers

- **What is this?** K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green) by k9 sport sack
- **How much does it cost?** C$56349 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/432888012-k9-sport-sack-kolossus-dog-carrier-backpack-for-small-medium)

## Best For

- k9 sport sack enthusiasts

## Why This Product

- Trusted k9 sport sack brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Breathe Easy Design:** Fully ventilated with side cooling zippers and padded airflow back panel to keep your dog cool and comfy on the move.
- • **Vet-Approved Safety:** Built under expert guidance with internal frame, wide base, and secure locking zippers for maximum pet security.
- • **Stylish & Functional:** Available in slimming colors with removable sun/rain hood and handy hip pockets—because your dog’s style matters too.
- • **Tailored Comfort Fit:** Adjustable shoulder and torso straps ensure ergonomic support for all body types, making every hike effortless.
- • **Adventure-Ready Capacity:** Transforms from dog carrier to 60L backpack for gear—carry your pup and essentials in one sleek pack.

## Overview

The K9 Sport Sack Kolossus X-Large is a premium, veterinarian-approved dog carrier backpack designed for medium to large dogs up to 80 lbs. Featuring a 60-liter convertible capacity, adjustable ergonomic straps, full ventilation, and durable 300D Ripstop Oxford polyester, it’s engineered for comfort, safety, and versatility on hikes, bike rides, and urban adventures.

## Description

Completely redesigned in appearance, construction, and functionality, the Kolossus, formerly known as the Rover 2, is THE big dog backpack carrier that now doubles as a backpacking pack. It is ideal for carrying medium to large dogs and available in sizes L-XXL. KolossusÂ technology is top of the line in pet/human safety and comfort. Adjustable shoulder/torso sizing makes this backpack more suitable than ever for all body types (as long as you can withstand the weight). When youâre not carrying your 4-legged friend, the backpack easily converts to carry your gear with up to 60 liters of space. Use this backpack for strenuous hikes, bike rides, and public transit. For Dogs Ranging 20-80 lbs (9-36 kgs) 50-60 liter capacity View More SizingÂ Instruction Features Backpacking Pack Conversion Adjustable Shoulder/Torso Height Removable Lap Belt with Hip Pockets & Waste Bag Dispenser Internal Frame with Inner Padding for Dog Comfort Padded Back Panel with Increased Airflow Removable Storage/Dog Back Support Pack with Hydro Port Weight Distribution Straps Side Cooling Venting Zippers Wide Base to accommodate your pet and its tail Detachable Dog Sun/Rain Hood Dog Lumbar Support Straps 300D Ripstop Oxford Polyester Material Matching Hook & Loop Strip for Custom Patch Compare K9 Sport Sack Carriers View Patent Info Safety All K9 Sport Sack carriers are specially developed under the close direction of animal professionals, veterinarians, dog trainers, and outdoor product engineers to be ergonomic, safe, and strong.

Review: Super, amazing, the best! Great for our medium sized dog (ESS for reference). It’s sturdy and made from good quality materials. Great for hikes, city and transport. Comfortable and wide shoulder straps for better weight distribution. Highly recommend.
Review: Excellent quality with great padding around shoulders and waist.

## Features

- The K9 SPORT SACK Kolossus LARGE is perfect for dogs weighing up to 80 lbs. Ideal for breeds like Corgis, English Bulldogs, Brittany Spaniels, and Standard Schnauzers, this backpack is versatile enough for all sorts of adventures—whether you're hiking, biking, shopping, or even skiing. ..heck the possibilities are endless!
- RUFF LIFE: Do you hate seeing big, sad puppy dogs eyes as you walk out the door for an adventure, leaving your best friend behind? Our dog sports backpack are ideal for owners who have dogs who suffer from anxiety, depression, or have a physical disability. Our pet backpack are also great for older dogs or puppys that may not have the stamina for your next big adventure. Our dog carrying backpack is designed to keep your dog safe and secure. Its the ultimate dog backpack for hiking!
- ROUND TALL FAT SMALL: We get it! Dogs come in all shapes and sizes, and not every pet travel bag fits the same. We have your dog covered! Our dog travel carrier is available in multiple sizes from X-Small to XX-Large. We have a dog carrier bag that will fit almost any dog breed. Scroll down in the product description to find the right size for your dog! Please contact us and visit our website for more accurate sizing recommendations.
- SPORT SACK IS THE NEW BLACK: (Tip) For all the chubby dogs out there with a few fat rolls over the collar, our Jet Black is very slimming! Jokes aside, Jet Black is just 1 of the 4 stylish colors we offer in the Sport Sack URBAN 2, and don’t worry all the colors have a slimming effect!
- USA-BASED COMPANY: Wrong size? No problem. Any issues? We’re here for you. Whatever the problem may be don’t worry we’ll cover it, but we’re happy to hear any good stories and see your adventures with your dog.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08WRMMTR3 |
| Allergen Information | Allergen-Free |
| Batteries Included | No |
| Batteries required | No |
| Closure | Zipper |
| Colour | Green |
| Customer Reviews | 4.3 4.3 out of 5 stars (51) |
| Date First Available | 16 Feb. 2021 |
| Item Form | other |
| Item Weight | 2.04 kg |
| Item model number | ROV2-GRN-XL |
| Maximum Weight Recommendation | 36.29 kg |
| Number of Items | 1 |
| Pet Life Stage | All Life Stages |
| Pet Type | Dog |
| Product Dimensions | 30.48 x 27.94 x 68.58 cm; 2.04 kg |
| Quantity | 1 |
| Size | 18 cm L x 25 cm W x 66 cm H |
| Special features | Adjustable Shoulder Strap, Locking Zipper |
| Specific Uses | Outdoor |

## Product Details

- **Brand:** K9 Sport Sack
- **Colour:** Green
- **Material:** Faux Leather
- **Product dimensions:** 17.8L x 25.4W x 66H centimetres
- **Special feature:** Adjustable Shoulder Strap, Locking Zipper

## Images

![K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green) - Image 1](https://m.media-amazon.com/images/I/51DfiWmz-RL.jpg)
![K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green) - Image 2](https://m.media-amazon.com/images/I/51R67jYlspL.jpg)
![K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green) - Image 3](https://m.media-amazon.com/images/I/51ToPiBuGeL.jpg)
![K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green) - Image 4](https://m.media-amazon.com/images/I/51txC3gJ9xL.jpg)
![K9 Sport Sack | Kolossus Dog Carrier Backpack for Small and Medium Pets | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green) - Image 5](https://m.media-amazon.com/images/I/61tABHIfTQL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***L on 19 February 2025*

Super, amazing, the best! Great for our medium sized dog (ESS for reference). It’s sturdy and made from good quality materials. Great for hikes, city and transport. Comfortable and wide shoulder straps for better weight distribution. Highly recommend.

### ⭐⭐⭐⭐⭐ Review
*by K***T on 21 May 2024*

Excellent quality with great padding around shoulders and waist.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 15 July 2022*

My dog broke his toe and it never healed so we had to amputate the toe. We had a trip planned for Banff National Park and planned on bringing our dogs. We were going to be two weeks out of his toe amputation and we wanted to bring a pack for him since he hasn’t used that paw in awhile. I’m so glad we purchased this for him. It was a two person job to get my dog into the pack but once he’s in he’s snug as a bug. The pack seems very sturdy and it’s comfortable once it’s on you. Follow the measurements given and you should be fine. My dog is 40 lbs and the large fit him with his measurements. I’m so happy they make packs for bigger pups.

## Frequently Bought Together

- K9 Sport Sack | Kolossus Dog Carrier Backpack - Medium to Large Dogs | Front Facing Adjustable Dog Backpack Carrier | Fully Ventilated | Veterinarian Approved (X-Large, Kolossus - Green)
- NVTED Dog Sunglasses/Goggles, UV/Wind/Dust/Fog Protection Pet Glasses Eye Wear with Adjustable Strap for Medium or Large Dog (Pack of 1)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-06*