Kerry says this side-by-side is slim enough to get through the majority of doors and take two car seats or carrycots. It folds up self-standing and a handy carry strap for easy schlepping.

Size
A good-sized shopping basket and front and rear suspensions are the most important aspects to look for in a double buggy. You may want to look at whether it's an e-travel system, or whether a car seat or carrycot is possible to add. These are important considerations when you have to take your children in public transport or on longer journeys.
Consider the Leclerc Kooper X2 if you are looking for a small, double buggy you can use from the beginning. This side-by-side model has an innovative frame that expands widthways to allow it to accommodate two children. The seats can be reclined or positioned independently. This lets you allow one child to relax and take a nap while the other observes the surroundings. There is also a huge UPF 50+ canopy, as well as a peekaboo feature.
Another great option for infant twins is the Mountain Buggy Duet. It is the tiniest side-by-side twin pushchair available and only 63cm in width, it should fit through most doorways. It can be used with two car seats or a carrycot, and has lie-flat seats suitable from birth.
Tandem double buggies that have the children positioned side by side is a popular option for twins or parents of a baby and a toddler. They have a bigger footprint than single-seaters, and are more difficult to maneuver through narrow doors or on pavements.
The iCandy Orange is a popular tandem buggy that's been designed to adapt to your family. It comes with 30 different seating configurations. It can be used with twins, a baby and toddler or even three kids if you purchase iCandy's "PiggyBack" board (which you can buy separately). It is equipped with a soft suspension system that makes kerbs simple to navigate. It can be used in either single or double mode. It is also possible to attach a single stroller on the top of it to provide extra storage space.
Weight
A quality double buggy must be lightweight and easy to push. It should come with a large shopping basket as well as front and rear suspensions that allow the child to traverse rough terrain, and be suitable for twins as well as siblings of different ages.
A lot of compact double buggies come with frames that are designed to fit infant car seats and come with adaptors branded to match the most popular models from Cybex, BeSafe and Maxi-Cosi. These are a great option if you have younger children with medical conditions and want to avoid the need to purchase separate strollers.
However, they tend to have a larger footprint than side-by-side buggies, and may be more difficult to maneuver through doorways and on public transport. If this is important to you, look through the product's details to determine if there are any alternatives available.
If you're looking for the most compact double pushchair on the market, check out the Mountain Buggy Duet. It's the slimmest side-byside on the market at just 64cm wide. It is suitable for twins who are just born or one baby and one toddler. It has robust engineering and superior functionality with large air-filled tyres, which are all-terrain but also great for cruising around the city.
The UPPAbaby Vista 2 is another great alternative. It can hold twins as well as a baby and toddler, or two children using a piggyback board (which must be purchased separately). It has a self-standing fold and carry strap to make it easy to transport and it has both rear and front suspension to help you cope with the rough terrain. It's heavier than the Joie Evalite Duo, but lighter than the majority of trifold buggies. This is a great option for older children.
Folding
The Baby Jogger City Select 2 is a fantastic option to store the double pushchairs buggy. This model is a side by side and has a smooth fold. The frame expands as you fold it, which means it's smaller than the standard stroller. This makes it easier to maneuver through doors and on public transportation, as well as making it less necessary to have a second vehicle.
It's an excellent option for parents of twins as it can be used with two seats and car seat adaptors. It can accommodate another child on the 'piggyback board' of the buggy. It also offers an array of options, including seats that are elevated to give both children an overview of their surroundings. There's even a handbrake built into the adjustable handlebar, making it easier to push it up and down hills.
Another good option is the Mountain Buggy Duet, which has the smallest footprint side-by-side available at 64cm. It is ideal for parents who worry about fitting a double into a door or on public transport. However it is able to handle rough terrain and be a true off-roader. It can carry twins or a toddler and baby or two kids of the same age, and each seat reclines independently to keep the kids at ease.
The iCandy Peach is a good alternative. It can be used in mono or tandem mode, and can accommodate two car seats or a carrycot that has a toddler seat. It's slightly larger than other doubles, but it has excellent manoeuvrability, particularly on smooth surfaces and is a great option for those looking for an attractive but practical buggy.
There are numerous inexpensive best double strollers buggies available, like the UPPAbaby Vista 2. This is a compact side-by-side that can accommodate a newborn in a carrycot and a toddler in a seat, or even three kids if you include the pizazz-branded PiggyBack ride-on board. It has a simple, self-standing fold as well as a big canopy that gives both kids some protection and also has a peekaboo window. It's also quite light for a double stroller, and comes with a large undercarriage basket that can be used to store your shopping.