Before you come to your first class, you’ll need to figure out what to wear.
You don’t need to own a Brazilian Jiu-Jitsu gi for your first class. T-shirt, shorts and sweat pants are fine- Or if it's your very first time in you can rent a Gi for 50HKD.
Do not wear anything with extra pockets, belt loops or baggy fabric. These are dangerous since fingers and toes can get caught in them. Baggy cargo shorts are an example of what not to wear.
You should also remove any jewelry (ring, necklace, bracelet, piercing, etc) and watch to prevent injuries.
You will need to buy a Brazilian Jiu Jitsu gi if you continue training.
Storm Gis are available at Grips in white, blue and black and cost HK$1400.