Retro Vigor or bath the warmth relaxes the skin of the scrotum making it easier to feel for anything unusual to use both hands to examine each testicle place your index and middle fingers underneath the testicle and your thumbs on top roll the testicle between your thumbs and fingers it's normal for testicles to be different in size point three as you feel the testicle you might notice a chord like structure on top and in back of the testicle this structure is called the epididymis it's stores and transports sperm do not confuse it with a lump for feel for any lumps lumps can be pea sized or larger and are often painless if you notice