The world's leading delay spray for men, STUD 100 has been specially formulated to help delay ejaculation and improve sexual relationships. <br><br> sensitivity of the penis. It contains 9.6% Lidocaine, a widely used topical anesthetic. STUD 100 is non-toxic, odorless, and ozone friendly, and can be used with branded latex condoms. <br><br> No prescription required. STUD 100 conforms to all FDA regulations and is approved by leading health authorities around the world.