Top critical review
Flawed design produces weak coffee
on May 2, 2015
There are several problems with this design. A k-cup is only half full of coffee grounds. There is a paper filter that keeps the grounds at the top of the cup; the bottom is empty. When hot water enters the k-cup, it covers the grounds, goes through the filter, and collects at the bottom of the cup where it's collected by the machine.
This cup has cut outs on the side as you can see in the picture. When hot water enters this cup, it goes through the top layer of the coffee and pours out the side since the side filters offer less resistance to flow. The result is a super weak coffee because the grounds at the bottom are not exposed to water.
To prevent leakage, the cup must be securely closed. Since the side cut outs reduce the rigidity of the cup, when you try to snap the lid closed, the sides of the cup crumple.