Hard to wear and inconvenient
The alarm portion was heavy and dragged my son's shirt down.  You also have to pin it to his shirt - not a very good idea for a tired parent at 2:00 in the morning.  I lost the velcro that attached the pin to the alarm, and ended up having to sew it together.  My son was uncomfortable with the stiff, large pads that go in the pants.  Also, he tended to not wake up to the alarm.  Ended up ditching this and buying a whole new alarm for him.
Rating: 1 stars