p>The Z4 measures just 20 inches / 50.8 cm wide, perfect for adventures where space is at a premium. The streamlined design of the chassis makes maneuvering through crowds easier and more convenient. The telescoping handle accommodates users of different heights and the hand-sewn eco-leather bar adds a touch of elegance. The wheels have a suspension system and 12 ball bearings, which means they are 30% easier to push and can take on different surfaces. The Z4 chassis is travel-system compatible with the Primo Viaggio 4-35 Nido Car Seat (sold separately). The streamlined design of the Z4 allows it to be maneuvered with ease through heavy sidewalk traffic, narrow aisles, and crowded elevators. The hood is height adjustable and follows baby’s growth while containing UPF 50+.  Features:-Innovative design allows for quick and easy folding and closes inward, always keeping upholstery clean-To transform in a double stroller add a companion seat and a double adaptor ( both sold separately)-Wheels with ball bearings and suspension allow for 360 degree agility and less effort in pushing-The backrest can be adjusted to three positions: sitting, relaxing and resting-UPF 50+ Height-adjustable hood (2 1/2” / 6.3 cm) that follows baby’s growth-Lockable front swivel wheels with independent “one-step” rear wheel brakes-The backrest can be adjusted into three comfortable positions: sitting, relaxing, and resting-Allows for easy push with just one hand-The handlebar can be modified into three positions to fit parent’s height preferences   Dimensions (unfolded): 20" x 39.25" x 40.25" / 50.8 cm x 99.6 cm x 102.2 cmDimensions (folded): 20" x 32.25" x 15.25" / 50.8 cm x 81.9 cm x 38.7 cm Weight: 22.5 lbs / 10.2 kg