Buying a Tandem Double Buggy
If you have twins or children very similar in age, a tandem double buggy is a fantastic option. They're narrower than side-by-side buggies and are ideal for maneuvering narrow spaces like doorways, on public transport and rocky terrain.
Many also transform into travel systems that take 2 carrycots or car seats. They are often heavier, longer and less stable than a single pushchair.
Convertible
There are many options for adding a second seating or converting a single stroller to a double. The UPPAbaby V2 is large, beautiful stroller. It is easily transformed from a single stroller to a double by adding the seating area with a rumble. It's costly and less mobile than other double strollers due to the fact that the second seat goes to the left of the front seat. Nuna Demi Grow is a similar model but lacks storage underneath the seat when used as a double stroller.
Other options include twin buggies that have all-terrain wheels as well as joggers that have fixed wheels that can accommodate two kids. They are more expensive but they are made to last longer on rough terrain and have more expensive resales.
Reclining the seat independently
If you want a double stroller that will accommodate children of various ages, you will need one with a recliner that is independent for both seats. This will allow your child's older to rest in the back while the baby sleeps in the bassinet, and vice versa.

Think about the size of your pushchair and consider how easy it is for you to get through doors and public transportation. If your doors are narrow, you may think about a side-by-side pushchair such as the Mountain Buggy Duet. It has a footprint that is similar to a single stroller but can still accommodate two seats and car seat adaptors.
Tandem buggies are typically longer than side by side models, which makes them more difficult to maneuver around and down kerbs. However, they can accommodate more combinations of seats/carrycots/car seats and are an excellent choice for twins and siblings of various age. double pushchair from birth are also more expensive than single-to-double buggies, but they're worth it if you intend on keeping it for many years. They also hold some value if sold when your children are old enough to use the buggie.
This feature allows you to place your child in a comfortable position for naps or observation. This is important if your child is in the back seat and wishes to rest while the child in the front prefers to sit up and observe the surroundings.
Some brands have a unique design that allows the back of their vehicles to recline fully into a position that's nearly flat, which is ideal for newborns. The iCandy Orange, for example is a stadium-style seat that can be reclined into several positions. double travel buggy offers UPF 50+ canopy and windows that peek out.
Larger than twin buggies
They are perfect for siblings with different age groups, and you can get around without having to worry about your children touching. They're typically a bit longer with one seat positioned behind the other. The seats can be reclined completely for newborns or in an upright position for toddlers.
Mountain Buggy Duet is a popular choice. It is the slimmest design that is side-by-side, and a footprint similar to a single stroller. It features an adjustable handle that makes it easier for parents to push, and a handbrake that is helpful on steep hills. It is suitable for use right from birth, and can be paired with a wide range of car seats and carrycots.
The iCandy Wave is another option. It folds in either mono or duo mode with just a single click. Its clever frame can be expanded widthwise to accommodate a second seat and can be used with two carrycots or car seats making it a great option for older siblings who want to sit together and share the view. It's a bit bigger than the other models, but it isn't heavy and has a soft suspension for the kerbs.
There are a lot of 3-wheeler inline tandems available such as Phil and Teds' inline models or iCandy's Peach and Pear buggies, for example that provide stability and swift steering. Often these can be folded down to the size of one buggy which is useful if you struggle with storage at home or have to transport it into and out of the boot when using public transport.
Be aware that a double wide buggy is heavier and bulkier than one that is compact. Be sure to know what you want before you buy. You'll be taking it on and off subways, trains and buses frequently, so it must be easy to operate and manage. You may need to juggle the car seat on and off when taking your child to school or nursery.
From birth, you're a good candidate
There will be a need for a pushchair for your entire family, regardless of whether you're expecting twins or you have another child after having your first. Double buggies are generally larger, heavier and cost more than single strollers, but they are also easier to maneuver through narrower doors or around obstacles like curbs. Many double buggies work with piggyback boards (available from the manufacturer or as an accessory). This allows you to transport three children at the same time.
Tandem pushchairs place one child ahead of the other. They're a good option for children who are close in age and get along well. But they're not foolproof: Siblings in side-by-side seats can kick or punch one another, and children who are different heights can argue over who gets to sit higher. This issue can be addressed by a tandem high-low model that elevates the seat in the rear. Your older child isn't seated at the lowest part of the car and won't be able to get a look out.
The iCandy Wave is a great option for parents looking for an easy-to-use convertible double buggy that can fit a newborn into a carrycot as well as an older child in the main seat. It has an innovative frame that expands in width when you add the second child seat. double buggy from birth folds flat for compact storage. The cushioned seats are comfortable, the straps are easy to secure and the buckles are among the most impressive we've seen in any of our tests. The canopy is large in size, UPF 50+ protection, as well as a the window is peekaboo. Both seats are reclined independently.
The only drawback of the iCandy is that it's a bit expensive, but a quality tandem will last for a long time and maintain its resale value, so you'll probably get back some of the cost in the long run. It doesn't have the same variety of seating configurations that some of our other top choices however the iCandy is a good choice for families who don't wish to spend a fortune.