... Detail:9 or 12 pcs/opp bag,or base on your requestDelivery Detail15-20daysSpecifications1,Material:plastic ball+nylon washing ball 2 ... and economical4,Natural way to kill bacterial,take care of your clothes5,Effectively avoid twist of clothes during wshing6,Long life ... year at least normally much more7,Easy to use,what your need to do is to put the laundry washing ball ...