B074TWB3HS NipGuards Six-Pack (60 Pairs) – Guaranteed Nipple Protection Since 1998 for Endurance Athletes. Complete Protection in All Race Distances – Even Ultra Marathon 100 Milers! Water Proof. Sweat Proof.

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Used primarily by male athletes (woman typically wear bra’s and do not experience the problem).
Will not fall off until you decide to remove them.
Works in all weather conditions. Heat, humidity, rain, wind, cold and snow.
Great for running, swimming, cycling and triathlons.

Adhere directly to the nipple, not the chest.No shaving required. Water and sweat proof.