Some side to side movement is normal. This is due to the legs needing a very small amount of clearance between the tubes so they can easily pass each other. However, this wobble doesn't effect the performance of the picnic table. If you do have any other questions, feel free to reach out to our customer service team. They can be reached at 800-225-3865 or by email at customercare@lifetime.com. Customer Service hours are Monday-Friday, 7:00 am to 5:00 pm (MT).