Waterfly Waist Fanny Pack, Waist Pack with Bottle Holder Water Repellent Bum Bag Dog Walking Waist Bag

Is it too difficult for watefly to actually show, in their ads, the correct size of their waterbottle. hell, it's their product they need to hawk. ;)

where is this product made?

Do it have a hole for one's ear plugs?

Would this bag be too big for a 6 and 9 year old to carry while day hiking? I wanted a place for them to hold their own water bottles. Thanks.