Getting even extractions & temperature stability just right for your pour-over coffee is easy with a Kalita Wave Coffee filter. These filters are incredibly durable and feature a wave design to channel water evenly and keep grounds off the sides of the brewer for better temperature stability. Sold in packages of 400. FSC certified. The Kalita Wave is a unique brewing process with tailor-made filters and brewers that provide foolproof pour over coffee extractions. The inside of a brewer features a wave design with a contrasting 20-wave filter that works rhythmically together to limit contact between each other so water can flow evenly and at just the right rate. Once the water reaches the flat bottom 3-hole design the brewer prevents water from accumulating so extractions are even and bitterness is dodged; the result is delicious coffee. Rarely are people disappointed with the results of a Kalita Wave Brewer for their even extractions and simple brewing process. Details & Care For use with a Kalita Wave 185 Dripper. For 2-4 cups. 400-count package. White filters. Made in Japan. Store safely away from dust & water, pre-wet your filters before brewing, and discard grounds & filters in a compost bin.