Product review (1 stars): great intention with bad execution
The magikan company has a great idea to simplify trash disposal via a continuous roll of "bag" that allows personal adjustments. It was supposed to save space, reduce amount of bag used, and make it convenient, however this system did none of those. For starter, the roll is stuck inside the trashcan. Space in the trashcan has been sacrificed for trashbag instead of having refills say.. under the sink? Second, reduce the amount of bags used. Quite frankly, this system requires you to manually tie up the bag after you cut it, and to tie up the top which sort of makes it like a candy pack. The amount of trashbag used just for the ties are absolutely substantial. Third, covenience? I hope they were joking about this one because the tie in and tie out every time when throwing trash bag out is way too strenuous compared to traditional trashbag where you just zip and pull. Also, this type of bag can not take fluids. Due to the artificial knot created at the bottom, it does not have a sealed end. If one wishes to dispose of kitchen waste which constantly is fluid, the aqueous deposit stinks up the bottom of the trashcan. The pots and cracks inside the trashcan does not help either thus creating a stink bomb with use.

I got these trashcans/ refill roll as a gift, and sorry to say, they are now somewhere in the trash pile stranded for eternity. (what a giant landfill I've made, shame on me)