Warm your Fleshlight sleeve by removing it from the case and soaking it in a sink/tub filled with warm water. If necessary, drain the water and repeat the process with new warm water. Do NOT boil or microwave your sleeve! Shake off the water and re-insert the sleeve into the Fleshlight case, adjust the tightness of the cap at the bottom to vary the suction, and finish by applying a liberal amount of lubricant to the orifice and yourself.