I didn't buy 戒片褲 for my boy. i bought some cotton short pants from the market, very cheap, less than $10/pc. coz' if the pant is thin, it is easy to dry up. from the very first beginning, my boy has to change 6-7 pants a day coz when he was concentrated to play toys, he will wee wee. if you are really exhausted and not want to clean the house so many times (as I do not have a maid). sometimes, I will let him wear pull-ups. My boy learnt wee wee first and then poo poo. I put the potty in the living room and whenever he could successfully poo in the potty, I will praise him (just say 'VERY GOO BOY!' or sometimes gives him stickers) to encourage him.