This comparison assumes that the seats and trailers in question are well designed.  We consider the Burley trailers and Bobike seats the benchmarks of quality in their respective categories, which is why we stock them.  Each method of carrying your child has advantages and disadvantages.  The best choice for you will depend on your riding skills, how often you ride, and your bike

Advantages of Seats

• Rarely need to be removed from the bike
• Easy to remove or attach when necessary
• Puts your child in much closer proximity to you, facilitating communication, kissing, tickling, etc.
• Doesn’t increase the “footprint” of the bicycle when parking or storing the bike
• In the case of front seats, very little impact on bicycle handling

Advantages of Trailers

• A well designed trailer won’t tip over if your bicycle tips over
• Increases your visibility to other road users
• Can also be used as a cargo trailer (pick up groceries with the kids)

The disadvantages of each method are implicit in the advantages of the other.  If you use your bike as primary transportation but don’t always have your child, attaching and reataching a trailer 2-3 times a day is a pain.  I know, I’ve tried it.  On the other hand, if you have room and a bicycle to leave a trailer attached to at all times, then this isn’t an issue.  Or, if you only ride on the weekends, the extra hassle of the trailer isn’t much of an issue.  If you’re not entirely confident on your bike, then you might be more comfortable with a trailer that won’t tip over if you do.  Seats are less expensive than trailers, and most people prefer the experience of riding with their child in a seat–especially a front seat–than a trailer.  If you’re undecided and we can be of any help, don’t hesitate to call the shop.