Warm your Fleshlight insert by 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 insert! Shake off the water and replace the insert in the Fleshlight case, adjust the tightness of the cap at the bottom to vary the suction of the insert, and finish by applying a liberal amount of lubricant to the Fleshlight and yourself. If the Fleshlight still feels too cold to you, then next time try warming the lube in the sink/tub at the same time as the insert. The Fleshlight is now ready for use.