There are a few things you need to know in order to attach a car seat to a Bob Stroller. The first is that the car seat should be compatible with the Bob Stroller’s harness system. If it isn’t, you’ll need to find another way to attach the car seat. The second thing you’ll need is some type of adhesive. You can use any kind of adhesive, but make sure it’s strong enough to hold onto the car seat and the harness system. Finally, make sure that your child is able to reach the straps on either side of the car seat.