As a mom of four kids ranging in age from 5 months to 9 years, transporting everyone around can be a challenge. My 9-year-old is good to walk, but my baby and 3-year-old are ticket-holding stroller riders. And, if we’re going to be walking for a while, it’s pretty much a guarantee that my 6-year-old is going to want to hitch a lift at some point.

The Mockingbird Single-to-Double Stroller makes it easy to tote three kids.

It doesn’t make sense for me to invest in a stroller than can house three kids since my 6-year-old will soon be over it, but I do need something to allow me to get everyone around without having to dole out impromptu piggyback rides over long distances while simultaneously pushing a stroller with two kids. That’s where double strollers come in, and that’s why I decided to try out the Mockingbird Single-to-Double stroller. This stroller is expandable, modular and clearly intended for large families like mine.

I’ve been using a BOB Revolution Flex Duallie for years, and the Mockingbird is definitely different—in a good way. My husband jokingly compared the Mockingbird to a Mercedes, while our trusty BOB is more of a Jeep. There’s so much more to this stroller than swagger, though. Here’s what you need to know.

I’ll admit it: I usually pass off assembly duties to my husband, who is far handier and has much more patience with these things than I do. But I decided to actually give it a go this time. I’ve seen how long it can take to put together kid gear, so I poured myself a cup of coffee, pulled my hair back and got ready to spend hours putting this stroller together. Surprisingly, it only took me five minutes to assemble the main stroller (the add-ons I ordered took more time, but not much).

The Mockingbird stroller comes as a single (you have to order the second seat separately) and putting it together is as simple as popping on the front and back wheels, and snapping the seat in place. That’s seriously it. There are no screws, wrenches or additional tools needed.

The basket on this stroller is no joke—I haven’t been able to fill it to max capacity yet, which is really saying something, given how much I regularly pack to leave the house. I’ve put in a box of crackers, huge tub of pretzel sticks, rollerblades, pool towels and diaper bag, with room to spare. There’s even a little hidden pocket where you can stash more valuable stuff like earbuds or your credit card.

The “stock” Mockingbird Single-to-Double stroller has a lot going for it—you can customize the color, interior pattern and frame, for example—but there are many next-level add-on options as well. The stroller has an optional car seat adapter, so you can take your little one for a spin straight from your vehicle (that came in handy when my daughter was still napping when we got to our local park). There’s also the option of a carriage-slash-bassinet, so baby can lounge without being restrained while you cruise around.

The Mockingbird Single-to-Double Stroller has a built-in phone pocket on the back of each seat.

Naturally, there are accessories to make parents’ lives easier, like a cup holder and parent organizer that’s huge enough to house my oversized reusable water bottle, wallet, wipes and diapers, with plenty of room to spare. There’s also a hand muff that attaches to the stroller handle to shield your mitts when you’re cruising around in cold weather.

But my favorite add-ons are the second seat and riding board. Like the single stroller, the second seat simply snaps on (there’s a special kit that moves your original seat down to make room for the second seat up top). The riding board, which looks like a little skateboard that trails the stroller, is a huge hit with my 6-year-old. It features a seat that can be removed and, when he gets up and walk, I can hook the riding board up and away from the ground so it doesn’t drag or rattle.

UV shades attach to the stroller with the help of hidden magnets and then hook at the sides and underneath, giving your baby breathable shade that’s easy to put on and take off. My 3-year-old actually prefers to have the shade on, so she can pretend like she’s in her own little pod as we cruise around.

One of the cooler elements of the Mockingbird is all the options you have with the seats. Both can be forward-facing, or if you prefer, you can turn both kids toward you. It’s even possible to turn one kid toward you while the other faces away. Since you don’t use screws to put these seats in place, you can simply pop the seats around on a whim.

The seats also recline easily. As someone who is allergic to reading directions, I was pretty excited to figure out on my own that the little white button on the back allows you to gently angle the seat up when you want your child to see more and down when it’s nap time. The foot rests also move up and down, allowing for extra leg room—that definitely came in handy to allow my 5-month-old’s feet to touch the bottom of her seat, and to give my 3-year-old more room to stretch out.

I noticed right away how smooth the ride on this stroller is. You don’t have to put much force into it at all for the stroller to start gliding along—even with three kids on board.

There is a caveat, though: The Mockingbird’s wheels just aren’t designed for rougher surfaces. So, if your regular journeys include going over rocky surfaces or grass, this is not the stroller for you. But, if you plan to mostly cruise over sidewalks and roads, it’s a definite winner.

Folding this stroller as a single is no problem: You simply push a button, lean the stroller over and it collapses, nice and compact. As a double, it’s a little trickier. The mechanism is the same, but the stroller is still pretty bulky when folded. I found some tutorials online that suggest popping off the second seat and stashing it somewhere or carrying it, but that get tricky if you’re planning to take your stroller someplace like on a bus at Disney World and you already have to lift your stroller and baby.

The Mockingbird folds up easily, but isn't the most compact stroller while folded.

While I really like this stroller, there are a few things I’m not crazy about. Mockingbird recommends that you put your largest child in the back seat, which is positioned higher up from the ground than the front seat. That makes sense from an operational standpoint—having a heavy child in the front could raise the risk your stroller will tilt forward. But my 3-year-old prefers to climb into the seat herself, and it’s practically impossible with this set-up. So, I have to do more heavy lifting to get her in and out of the stroller. I also don’t love having my youngest child—who needs the most help and monitoring—the farthest away from me.

Also, the Mockingbird is pretty long when you’re in the double format. While this can be helpful when you’re navigating crowded streets, your front child is really far in front of you. I’m a little worried that someone might trip over my baby or bump into her when we’re in crowds. Though, to be fair, that hasn’t happened yet.

The price tag is also intense. While the Mockingbird starts at $450, that price can quickly rise when you add accessories like the second seat and riding board.

There are a lot of details about this stroller and its accessories that show someone put a lot of thought into this thing. Each seat has a pocket in the back for your phone, and the handlebar is lightly padded, so you won’t have to deal with hand cramps after longer strolls.

The canopies also unzip to offer extra coverage, with mesh vents in the back in case it’s steamy out. There’s also a small window flap at the top of each canopy that’s secured open with a magnet, so you can peak in at your child when they’re forward-facing.

Another cool perk? The handlebars on the seats seamlessly pivot open with a touch of a button, so you don’t have to try to maneuver your kid out of the seat without scraping their legs when putting them in and out.

Overall, this is a really fantastic stroller with a lot of bells and whistles seasoned parents can appreciate.