| Tandem | Side-by-Side (SBS) |
| slim enough to get through doorways and down narrow store aisles | often too wide for regular doorways and store aisles (but some models have become narrower) |
| may limit interaction between children (which may be good or bad!) | permits more interaction between children |
| children sitting in back and middle may have restricted view and leg space | easier for toddlers to get out of stroller by themselves |
| not all the seats can fully recline for sleeping | all seats may fully recline |
| can be heavy and hard to fold | may have less features than tandem stroller |
| seat positions can be changed in certain models (ex: children can face you or face the front) | children have more space and better view |
| children in back and middle seats may have restricted space when seat in front of them is reclined | easy maneuvering with triplets or children of similar weight |
| some models can accommodate two or three infant car seats | don’t fold as compactly as tandem |
| children in back and middle seats may bother the one in front of them | parent has easier access to all children |
| may cause arguments about who sits in front seat |
triple jogging strollers
come in this style |
| difficulty making turns due to length | |
| can be used for a baby and two older children (due to fully reclining back seat) | |
| fold more compactly than side-by-side | |
Some parents of triplets or multiple children who are of similar age use a tandem stroller when the babies are less mobile and don’t yet interact much with each other, then switch to a side-by-side model when they’re toddlers. Some want both designs starting when the babies can sit upright on their own so that they can have more options regarding the activities they can do with them (shopping, jogging, etc.).
In order to not limit the types of activities you can do with your children, the solution might be to buy one tandem stroller that’s as compact and portable as possible for shopping and one side-by-side stroller that’s comfortable and all-terrain (with better wheels and suspension than a tandem) for taking long walks and special outings, both the best that you can afford.