The ultimate cup of coffee starts with this hemp fabric coffee filter. Use them over and over, use them camping, use them travelling, just use them. I rocemmend rinsing out daily, and throwing in the wash weekly. Though use a detergent without scent and additives as you dont want your coffee tasting like Tide. I actually just boil mine once a week to remove the oil and coffee build up. We make these in our Portland and Kauai studios (ateliers).