The product is pre-installed, you only need to install the wheels. One-click Folding 360° Rotating Front Wheels Rear Braking System EVA Wear-resistant Tires With Safety Inner Leash Specification Weight : 15 lbsWeight Capacity:44lbWheel Diameter:7.87"Cabin Size:25.2"x17.3"x19.7"Overall Dimension:25.2"x19.3"x38.6"Material: Plastic+ Steel Frame+ Oxford Fabric Removable Cushion There is a soft cushion at the bottom, detachable and easy to clean Multiple Windows it has large window on the top and mesh windows on the side. it is easy to allow pet to see outside and Breathable. Sturdy Frame Our pet stroller is made of high quality steel frame. Wheels 360° Rotating Front Wheels Rear Braking System EVA Wear-resistant Tires Great for walk. 2-in-1 Folding Travel Dog Carrier Foldable Dog Stroller 2-in-1 Portable Pet Stroller Pet Stroller Buying Options Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 336 4.5 out of 5 stars 336 4.5 out of 5 stars 336 4.5 out of 5 stars 8 Price — no data $58.99$58.99 $118.99$118.99 $66.99$66.99 Foldable ✓ ✓ ✓ ✓ Weight Capacity 33 lbs 35 lbs 33 lbs 30 lbs Carrier Size 21.2x11.4x19.7in 19.7x11.4x22.8in 21.3x11.8x22in 21.6 x12.6x20.5in Folded Dimension 18x10in 18x10in 23x15in 19x38in Suitable for Small/Medium dogs Small/Medium dogs Small/Medium dogs Medium dogs Number of Wheels 4 4 4 3 Double Pet Carrier Double Pet Stroller Pet Stroller Cat House Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 4.5 out of 5 stars 336 4.4 out of 5 stars 151 4.1 out of 5 stars 18 1.5 out of 5 stars 2 Price $99.99$99.99 $99.99$99.99 $67.99$67.99 — no data Foldable ✓ ✓ ✓ no data Weight Capacity 17lbs for each carrier 22lbs for each carrier 30 lbs 30 lbs Carrier Size 19.7x13x14.5in 23.6x11.8x19.7in 27.5 x17.7x39.4in no data Suitable for Small/Medium dogs Medium dogs Medium dogs Small pets Number of Wheels 4 4 3 no data