Tumbl Trak Open Shoulder Trainer, Padded TRAIN SMART - The Open Shoulder Trainer is a light, padded device that reminds the athlete of the necessary open shoulder position. Develop your form through cartwheels, handstands, and more using this unique product! COMFORTABLE DESIGN - Ensure the correct position of an athletes shoulders and neck with the high quality, comfortable fit of the Open Shoulder Trainer. WE KNOW TRAINING EQUIPMENT - When you purchase the Open Shoulder Trainer from Tumbl Trak, you know that youre getting a TRUE training product. Coaches, former athletes, and industry experts make up the Tumbl Trak Staff.