【Extra-Large Capacity – Fits Big Cats & Multiple Pets】Measuring 23.7”L × 15”W × 16.6”H (42 x 38 x 60 cm), this is one of the largest soft pet carrier backpacks on the market—much bigger than most carriers that only fit a single small pet. With a 40 lbs max load, it comfortably holds two 20-lb cats, one small dog up to 25 lbs, or even 3–4 cats when the divider is removed. Its oversized interior makes it perfect for large-breed cats, chunky kitties, or multi-pet households needing more space than standard carriers. 【Dual-Compartment Design-Separate or Combine as Needed】Features 2 separate compartments to carry two small pets safely without crowding or stress. The padded divider keeps each pet comfortable and individually protected. Remove the divider to create one large compartment, perfect for a big cat or a small to medium dog. A flexible layout that adapts to multi-pet travel, vet visits, and everyday outings—unlike most single-compartment carriers. 【Upgraded 6-Wheel Platform – Smoother, Stronger & Easier to Control】Unlike standard 4-wheel carriers, HOVONO cat backpack carrier uses a 6-wheel system for better stability and control. The front 4 spinner wheels rotate 360° for easy turning and pivoting, while the rear 2 directional wheels keep the cat carrier moving straight and steady. This design reduces wobbling and rolling effort, making trips smoother, quieter, and effortless, even with heavier pets. 【Excellent Ventilation & Secure Design – Breathable & Escape-Proof】With 5 large breathable mesh windows, this ventilated cat travel backpack ensures your pet enjoys fresh air and a wide, calming view. The mesh side pocket is perfect for storing water, treats, or small essentials. Dual-access openings on the top and side make loading and unloading stress-free. For safety, the built-in security leash keeps pets securely attached inside, preventing accidental escapes. 【Measure Your Pet Before Purchasing – Ensure the Perfect Fit 】: This rolling pet backpack carrier is ideal for two cats, with each compartment accommodating cats up to 20 lbs, body length ≤ 15–18 in (38–46 cm), and shoulder height ≤ 13 in (33 cm); or one small to medium dog up to 25 lbs, body length ≤ 16–17 in (40–43 cm), and shoulder height ≤ 13–14 in (33–36 cm). Weight alone may not accurately determine if your pet fits. Please also refer to the size chart in the main images or description and measure your pet’s length and height to ensure the perfect fit. At HOVONO, we focus on the differentiated needs of you and your pets, and are committed to bringing you a high-quality experience and a convenient lifestyle. The HOVONO pet carrier with wheels features extra large size, 2 sturdy cabins, and 6 silent spinner wheels, is born for pet owners with multiple small pets.