If you are looking for safety knives, you should check out this website . Spring loaded knives are actually smart knife technology which allow the blade to automatically retract when the blade loses contact with the material being cut. The blade will retract even if the user tried to override the safety system by leaving the slider in forward position. I don't mind having spring loaded knives in the house as they are such smart knives :) I have to tell Wild Boar about it so that he will order one for me. I am sure he will be impressed as I am ,for I know he is a safety conscious person.