CAFEC's Flower Dripper in Tritan. The petal-shaped ribs are the point: they hold an air layer against the paper.
Manufacturer description
A cone dripper shaped like a petal. The coffee bed sits deep, and poured water runs toward the point of the cone, so the flavor the beans hold is drawn out fully.
Shaping the ribs inside the dripper like petals creates an air layer, letting the bed swell the way it does in a cloth filter.
Made of Tritan resin, which is light, easy to handle, and as clear and beautiful as glass. It is a safe material with high toughness, chemical resistance and heat resistance, used even for medical supplies. If you drop it, there is no need to worry about it breaking.
■ For 1 cup ■ Size: W131 x D102 x H79 mm ■ Weight: 80g ■ Made in: Japan ■ Materials: saturated polyester resin; heat resistance differential 100C to -20C