Jim, there's another thread on this subject with a lot of responses - read "Sore Nipples" for a whole lot of advice. But personally I use a product called Bodyglide, it's similar to vaseline but non-petroleum based, doesn't mark your clothes, us triathletes use it under Neoprene wetsuits because it stops any chafing and does not affect the Neoprene. If you read the other thread there's some advice on where to buy it from in England - soory I can't help you there as I live in Germany.