[Designed for Travel:(Not applicable for air travel) The rolling cat carrier with wheels allows you to easily handle long journeys shopping or walks bidding farewell to shoulder fatigue and arm soreness! With a detachable aluminum chassis a 4-level extendable dual-bar handle and 2 front wheels are 360° silent universal wheels 2 rear wheels are fixed wheels to increase stability (all 4 wheels are removable) sparing your pet from bumps on the journey. Large Size & High Capacity: Our large pet carrier is suitable for a big cat a medium-sized cat two small cats one or two small dogs. The soft cat carrier (without wheels) measures 21"x13"x13" recommended for pets up to 30 pounds. The cat carrier for 2 cats also features 4 storage pockets ideal for storing the wheels pet supplies food water and other essentials making travel more convenient. "Durable & Safe Design: Crafted from high-quality 600D PU material this cat carrier bag offers reinforced waterproofing and exceptional durability for long-term use. The removable double-sided cushion with one side featuring soft short plush and the other side wear-resistant material is suitable for year-round comfort. The cat travel carrier includes an integrated safety strap for securing your pets collar and the lockable zippers prevent pets from opening them." Ventilation & Concealment: The dog carrier with wheels features 4 entry doors with a mesh window on the top and both sides equipped with waterproof rain covers. Rolled up they provide excellent ventilation and visibility perfect for pets to gaze out and for you to check on them. When closed it adds an element of concealment creating a dark protected space for your pet to feel secure. Easy Assembly & Use: These dog carriers for small dogs can be securely fastened to the chassis using 4 Velcro straps to prevent it from sliding on the wheeled base. The 4 wheels employ a snap-on design for quick installation and removal in seconds. The cat crate can be hand-carried shoulder-slung placed in a car or pulled after assembly making it perfect for car travel walks shopping and various other scenarios.]