Sportsman's Willy Warmer The Sportsman's Willy Warmer should be every athletes emergency backup for cold combating cold private parts! Ideal for hikers, players, skiers, golfers, watchers, climbers, runners and cyclists and any outdoor activity. Twist the metal starter inside the heat pack and it will keep parts warm for up to half an hour!!! Warning: This product will make you more attractive to girls with cold hands.