2,400+ happy hamster cats
rolling all year

1 Year Warranty

1 Year Warranty

 4.8 (900+ Reviews)

🐹 Turns Your Cat Into a Hamster

🌿 Safe, Escape-Proof Outdoor Time

📦 Pops Up & Folds Flat in Seconds

📏 SIZE & FIT (CLICK HERE)

LIMITED TIME OFFER

1 Year Warranty

1 Year Warranty

£5.00
£5.00
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check_circle SECURE CHECKOUT  .  TRACKED DELIVERY

  • files/hf_20261007_233919_c7be784c-2031-4e5b-89dd-47ec61ca3cb2.png

    "She rolled around the yard like a pro. Zero chance of getting over the fence now 😂"

    Danielle R. ⭐️⭐️⭐️⭐️⭐️
  • files/hf_20261007_233723_0944ab55-0d27-4291-a9c3-66a674d8da1a.png

    "Popped open in seconds and Biscuit walked straight in like it was his throne."

    Tyler K. ⭐️⭐️⭐️⭐️⭐️

  • "Ordered a second colour because the other cat got jealous. Best thing we've ever watched 💗"

    Megan & Chris L. ⭐️⭐️⭐️⭐️⭐️
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    Shipping & Delivery

    Orders are processed within 1–3 business days and take 6–15 business days on average to arrive. In rare worst-case scenarios (peak season, customs delays or carrier issues), delivery can take up to several months. Every order includes tracking.

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    Will It Fit My Cat?

    Catmster is about 55 cm (22") across when popped open, which fits most adult cats with room to stand, turn and walk. It folds flat to a disc about 50 cm (20") for storage. Very large breeds (e.g. big Maine Coons) may find it snug. Always supervise your cat while it's in use.

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    Secure Shipping

    Every order ships with tracking and secure handling. Add Shipping Protection at checkout and if your parcel is lost, stolen or damaged in transit, we'll replace it free, no questions asked.

    Size & Fit

    Open diameterapprox. 55 cm (22")
    Folded flatapprox. 50 cm (20") disc
    FitsMost adult cats up to approx. [X] kg / [X] lb
    MaterialBreathable fine mesh with a flexible pop-up frame
    ColorsPink · Mint · Blue · Black

    Cats Gone Full Hamster Mode!

    • Neighbors stop to watch

      Took Mango out in the backyard for the first time and she was rolling around like she'd done it her whole life. My neighbor literally stopped mowing to watch 😂 Zero chance of her getting over the fence now.

      Danielle R.

    • Out of the box in 10 seconds

      It shows up folded flat in a little box and pops open in about two seconds. Our Shorthair Biscuit walked straight in and sat down like it was his new throne. The mesh feels really solid, not cheap at all.

      Tyler K.

    • Had to buy a second one

      Bought the pink one, then immediately ordered the blue because the other cat got jealous. Now they both cruise around the balcony together and it's the best thing we've ever watched.

      Megan & Chris L.

      The Catmster™ Promise

      We want your cat to love their new hamster life. Try Catmster for 30 days. If your cat isn't a fan, contact us via our Contact page for a return. If it arrives faulty, damaged or not as ordered, we'll replace or refund it, no hassle.

      Shop Catmster