a pathetic 15". ive worked my calves so hard i couldnt walk for days. i dont care what anybody says, its genetics. ive even done the synthol route, pumping 9 cc's a week into them which is the most painful thing ive ever done. ive been reading up on implants and there suprisingly cheap, around $1500. if you have the room they can add up to 2", but most people can only get an extra 1". if i could get mine to 18" id be estatic, def happy with 17". the screwey thig is my bis have always been a bitch but i have been able to find ways to make em grow. not the calves though.......