Tumbl Trak’s Skill Builder Package includes three of the most useful training aids offered by Tumbl Trak. These are; a pair of Sticky Toes, a pair of Standard Sliders and an Open Shoulder Trainer. Sticky Toes are designed to help gymnasts perfect their skills much more easily. They work by helping the gymnast determine when their feet are together or apart. Standard Sliders are slippery discs that can be used on carpeted floors. They allow gymnasts to move their body in a stationary space or across the floor to work their muscles. The Open Shoulder Trainer is a light, padded piece of equipment that fits around a gymnast’s shoulder and neck in order to maintain open shoulders needed for skills that move through a handstand. MANUFACTURERS WARRANTY 24 Months on material and workmanship. Q&A For what age group is the Skill Builder Package appropriate? The items in the Skill Builder Package can be used for all ages and abilities generally above preschool level. Why should I buy the Skill Builder Package and not the items individually? By purchasing the items together as a package, you not only save on the price you pay for the items, but also save a significant amount in shipping because we bundle them and ship together.