What to Look For in a Double Travel Buggy
A side-by-side double with small footprint (for narrow entrances and public transport). Add carrycots or seats (with adaptors), to increase the frame's capacity for weight for children up to 50 lbs.
A budget-friendly, basic double with front and rear suspension to take care of uneven surfaces, a large storage basket and a padded handlebar for parents of various heights.
Size
In general double pushchairs are generally wider than single models, especially when they're side by side buggies, like the Kolcraft Geo 3 and UPPAbaby Vista 2. This extra width allows them to accommodate larger children without straining their chassis. They also have other important characteristics that make them stand out, like large pop-out canopy sizes with SPF 50 and windows that peek out as well as swivel lock front tires which help navigate narrow spots such as aisles for shopping; a one-parent cup holder and a smart fold mechanism that can be operated by one hand; and 10 inch back wheels that aren't built for rough terrain, but can handle city streets and theme parks quite well.
In terms of cost they are surprisingly affordable. These types of light, side-by-side buggies are surprisingly affordable.
Weight
The lighter the double buggy the lighter it is, the easier it is to lift and maneuver. The Joie Evalite Duo is a excellent choice if you have to be cognizant of weight, as it's the lightest we've seen in our lab tests but still offers plenty of features, including large pop-out canopies with SPF 50 and peekaboo windows as well as a quick-release fold which folds flat in just a few seconds; four-wheel suspension that can take on rough terrain and an adjustable front wheel that makes navigating tight shops and supermarket aisles easy. It's also super-affordable at just more than PS1,000. It can also carry twins or a baby and toddler with the purchase of an additional'sidepack'.
Flexibility
A double buggy that is well-designed will offer a huge amount of flexibility, whether you have twins or a baby and a toddler. Buggies that are narrow can be used to squeeze into small spaces. Side-by-side models enable you to keep the track of your children and ensure their safety while you go to the grocery store or in the park. There are many buggies that come with a variety of seat configurations that allow you to modify them as your children grow. Some come with the option of adding an extra ride-on board or car seat.
The Joie Evalite duo is a perfect illustration. It can fit two seats or a car seat and its adaptors that are easy to use permit you to switch from single to double in just a few seconds. It comes with a large pop-out canopy shade with UPF 50+ protection, adjustable legrests and a the window that peeks out from both seats. A standing fold is simple to perform and fast.

The iCandy Peach tri-fold buggy is another option. They are perfect to navigate narrow doors and aisles. They also can easily accommodate twins and a big kid with the addition of UPPAbaby's"PiggyBack" board (which is sold separately). They offer a generous basket, and come with all the accessories you may require, such as rain covers and liners.
Tandem buggies are usually designed with your children seated side-by-side. This makes them more stable and easier to push on uneven surfaces, but they can be a challenge to maneuver up and over kerbs. They typically have a larger footprint than a single-seater pushchair, and may be a bit too long to get through doorways.
Comfort
Get the facts is one of the most comfortable, lightweight doubles we've test. It has stadium-style seating on both seats, so your children can enjoy the view. It also has an enormous UPF 50+ canopy with a windows that peek out, a cushioned toddler seat that includes an add-on RumbleSeat that has built-in, adjustable foot and leg rests as well as an integrated cup holder for a single parent. The seats can recline independently by pressing a lever underneath each seat. Testers love the fact that the straps can be fastened or unfastened with one hand. The handle is easy to turn and makes it easy to fold. It also stores with the backrest up for easy access.
This is the perfect choice for families who want to expand with their children. It is available in a variety of configurations, including 30. It can hold twins, a toddler and three children if you add the 'PiggyBack board'. The large basket and soft suspension make it ideal for kerbs, as in the city. It is also very reasonably priced. BabyGearLab recommends this to youngsters up to the age of six.