No leaks, no mess, no worries. First Line is designed to help keep you dry and on-the-go with confidence. With built-in leak protection for light days, you'll be able to relax, move, and breathe easy. The First Line 4.5" Boxer Brief features af loating gusset that can fit a pad with wings for some extra coverage when you need it. Finished with water resistant foldover elastic and threads. Machine wash and dry without a fuss.