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K9 Sport Sack® PLUS 2


The Plus 2 is a backpack dog carrier with a multi-functional storage pack. The storage pack is great for bringing gear, treats, or other necessities along on your adventures. It also acts as a support for your dog’s back, pulling your pup in snuggly against your back. Available in sizes S-L, its thicker shoulder straps and padded back panel allow for more weight and strenuous activities. The Plus 2 is our most complete carrier for small to medium sized dogs and fits dog owners small to large in build.

For Dogs Ranging 8-40 lbs (4-18 kgs)

Plus 2 sizing: S 13-17 inches, M 17-20 inches, L 20-23 inches

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  • Detachable storage bag (14"x9") Don't forget your gear!
  • Fully ventilated sides for maximum refreshing air flow
  • Padded back panel for increased comfort and cooling
  • Thicker, wider, pressure relieving shoulder straps
  • Mesh dual side pockets for increased ventilation
  • Ventilated cooling side panels
  • Adjustable dual side pockets
  • Sternum strap avalanche whistle clip
  • Newly added PLUS 2 features include:
  • Wide Base to accommodate your pet and its tail
  • Adjustable Side and Back Cinch Straps to ensure the best fit
  • Fur Flap (No more zipping your dog's hair in the bag)
  • Adjustable Collar Enclosure

Compare K9 Sport Sack Carriers

K9 Sport Sack® PLUS 2 Comparison

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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.

    Customer Reviews

    Based on 512 reviews
    Ray Davidson
    Go for the waist strap

    Nice backpack. Wish I’d known the Knavigate was coming out when I bought it. Even with a small dog (13#), a waist strap is a great help. Learn from my misjudgment; save your back!

    Melissa Stephens
    Our Pup Couldn't Be Happier!

    Our dog was born with a frontal lobe defect which means she has minimal vision and relies heavily on sound. She is so happy and excited to go everywhere, but becomes overwhelmed very quickly when we're in a high traffic (car and people) area - this bag is the perfect solution! Once she's bundled into it, she's calm and SO happy, readily taking treats and sniffing the air. Not to mention all the attention she gets when she's in it! We could not be happier with our purchase!

    Susan J
    Best backpack pet ever!

    Our frenchie seems to be comfortable with the sport sack! We used in hiking and it's the best decision ever! Our frenchie is 11kg and 43cm long
    We use a size L. Perfect fit!

    Works Well, Fits Fine

    I have a 17 pound miniature schnauzer. I bought the Plus 2 size small. It fits pretty snug which works for him but a dog any bigger would not fit. The size guide on the package (which I don’t recall seeing on the website) says small is good for mini dachshund or toy poodle, whereas medium is for Jack Russell or pug, and large is for corgi or French Bulldog. I should have ordered a medium but I didn’t know and had to guess.

    Heather Holland
    Gabi loved it!

    We were worried she would be scared but NOPE!! She loved it even took a nap!