- Trial Class: Advanced Booking is not required. Please come 15-20 minutes in advance so we can run you through all the things you may need to know before starting your first Jiu-Jitsu class. For the best experience, we recommend joining our BJJ (Fundamentals) class. Simply wear comfortable athletic clothing with no metal, zippers, or buttons—like gym shorts, yoga pants, or a t-shirt. You can rent a gi for just 200 THB during your trial lesson. We’ll take care of the rest! Please note, the free trial is available only to residents of the Bangkok metropolitan area.