Kolossus | Big Dog Carrier & Backpacking Pack

Heavy-duty dog carrier with internal frame, padded hip belt, and convertible 60 L gear mode. The Kolossus secures dogs up to 80 lbs—perfect for strenuous hikes, bike and motorcycle rides, or gear-heavy commutes.

🎒 Adventure Without Limits, On Foot or Two Wheels

K9 Sport Sack® Kolossus — The Flagship Big-Dog Carrier & 60 L Backpacking Pack

Take your big dog everywhere—mountain switchbacks, urban commutes, even motorcycle tours. Completely redesigned for 2025, the Kolossus carries medium-to-large dogs (L ≤ 60 lbs, XL ≤ 70 lbs, XXL ≤ 80 lbs) and converts to a full-featured 60-liter trekking pack when your pup wants to walk. An internal support frame, cushioned hip belt, and adjustable torso length keep humans comfortable while patented Angle-Base™ support and auto-locking zippers keep dogs secure.

Key Benefits

• Internal frame + padded hip belt
  Transfers weight to your hips, stabilizing the load at highway speeds or on steep climbs.

• Motorcycle-ready fit
  Streamlined profile, sternum clip, and side-cinch straps reduce wind flap and sway while you ride.

• Convertible 60 L gear mode
  Detach the K9 cockpit and haul tents, helmets, or camera gear.

• Dual-layer safety system
  Auto-locking zippers and an interior collar tether prevent mid-ride escapes.

• All-around mesh ventilation
  Keeps airflow high for hot pavement, trailheads, or summer highways.

• Quick-stash pockets
  Hydration sleeve, bottle pocket, and hip-belt pouches for snacks, tools, or trail maps.

Ideal Uses

• Strenuous backpacking and summit pushes

• Motorcycle or bicycle touring with big dogs

• Long urban commutes on buses, trains, or ferries

• Assisting senior or special-needs dogs on extended outings

Fit & Sizing

Measure from collar to tail base, then choose: L (dogs ≤ 60 lbs), XL (≤ 70 lbs), XXL (≤ 80 lbs). Between sizes? Size up and add a Booster Block for perfect torso height. Adjust the hip belt first—the weight should rest on your hips, not hang from your shoulders.

🏍️ Ride farther, climb higher, live bigger. With the Kolossus, your dog stays close, protected, and ready for any journey—whether it’s a backcountry trail or a scenic highway. Every purchase supports canine-health nonprofits, so your adventures give back while you gear up.