Open-End-Minitramp for strong performance and difficult jumps The Open-End-Minitramp is a modified version of the proven minitramp. The flat oval frame with frame-less jump in and out zone offers a strong performance and is suitable especially for more difficult jumps. Through the barrier-free entry and exit zone, the Open-End-Minitramp entails more safety. The device is offered with a high-performance 13-mm jumping bed, as standard feature. Even more powerful is the Premium model which is equipped with 6-mm-thick nylon bed.