---
product_id: 407001415
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$69158"
currency: NIO
in_stock: true
url: https://www.desertcart.ni/products/407001415-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 full ventilation with cooling zippers 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$69158
**Availability:** ✅ In Stock

## Summary

> 🎒 Carry your best friend in style—because every adventure deserves a co-pilot!

## 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$69158 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/407001415-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

- • **Heavy-Duty Comfort:** Ergonomic adjustable straps and padded back panel for all-day wear.
- • **Vet-Approved Safety:** Designed with vets and trainers for secure, anxiety-reducing pet transport.
- • **Weather-Ready Design:** Detachable sun/rain hood and breathable mesh keep your dog comfy rain or shine.
- • **Adventure-Ready Capacity:** Transforms from dog carrier to 60L hiking backpack for your gear.
- • **Tailored Fit for Big Pups:** X-Large size fits dogs up to 80 lbs with wide base and removable support.

## 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 versatile 60-liter capacity that converts from pet carrier to hiking pack, it offers ergonomic adjustable straps, full ventilation, and weather protection. Built with durable 300D Ripstop Oxford polyester and safety-focused design, it’s perfect for active professionals who want to bring their furry companions on every adventure.

## 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.

## 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 |
|---------------|-------|
| Pet Type | Dog, Small Animals |
| Product Dimensions | 30.48 x 27.94 x 68.58 cm; 2.04 kg |
| Item model number | ROV2-GRN-XL |
| Pet Life Stage | All Life Stages |
| Item Form | other |
| Allergen Information | Allergen-Free |
| Closure | Zipper |
| Color | Green |
| Size | X-Large |
| Maximum weight recommendation | 80 Pounds |
| Number of Items | 1 |
| Quantity | 1 |
| Special Features | Locking Zipper |
| Specific Uses | Outdoor |
| batteries required | No |
| Batteries Included | No |
| Item Weight | 2.04 Kilograms |

## Product Details

- **Colour:** Green
- **Brand:** K9 Sport Sack
- **Product dimensions:** 17.8L x 25.4W x 66H centimeters
- **Material:** Polyester
- **Special features:** 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/816yBZgpfBL.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/61AvQXnCByL.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/71QwX2ryC1L.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/715iPLu2p5L.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/81IlHYlofvL.jpg)

## Available Options

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

## 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)
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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-26*