This stops cold the risk of overheating: X-BIONIC® THE TRICK® Bike Shirt. Cycle longer and faster without overheating: The Trick® by X-BIONIC® makes that possible. Along the length of the spine in the X-BIONIC® THE TRICK® Bike Shirt is an insulating pad. It simulates the body overheating and allows early sweat production to kick in. Thanks to preventive cooling, extreme temperature spikes and energy-sapping overheating is avoided.