Lester and Sandy Colbert are not only the coaches but are also the business owners of the Tumblebee's Bus. This loving couple are the parents of 2 whom love the Tumblebee's Bus. Fitness has always been a common bond among this family. "We believe that keeping kids fit and active during childhood is the key ingredient to a healthy adulthood". Lester attended Baylor University and majored in Biology/Physical Education. Santresa attended the University of Houston and did graduate studies in Child Development at Florida International University. Both coaches are active members of the USA Gymnastics (USAG). They have been trained and certified in CPR and Basic First Aid Training, USAG Safety and Risk Management, and USAG Preschool Fundamentals. In addition, they continually update their knowledge and skills in the field of Physical Education, child care and development, preschool and junior gymnastics, and basic health and nutrition through seminars and training workshops.