It took an hour to assemble by myself. There was definitely a learning curve with figuring out how to put them in my ears properly. 1mm adapter in a small pouch velcroed to the back. Im going to try filling the holes with shoe goo. Been a few months and they are holding up well, even when I hang heavy bags. They fit just fine too. Overall, thats been nice. Powered it up, switched the language over, popped a DVD in after dad said it didnt work. A good quality item they will fool anyone into thinking theyre standard earplugs as long as you dont have them too loud as you will seem to be unusually deaf lol. Will continue to purchase in other sizes as her feet grow.