Gym U, voted best in East Texas, offers the very best tumbling and trampoline classes for ages 18 months to 21 years. We also host the world's greatest Birthday Parties! From 45 minutes to 1-hour .... It's FUN, it's healthy, it's play with a purpose! Our program's primary goal for preschool children is to develop a high level of gross motor skills and to build self-confidence. The children receive instruction on our mats, trampolines, inclines, mailboxes, barrels, parachutes and more.