Espro, from Vancouver, British Columbia, has completely designed the French Press. They stand by their products with a lifetime guarantee. Every element in their products is carefully considered. Stainless steel is used because it imparts no flavor and doesn’t oxidize or degrade over time. Food-grade paper filters are the thinnest possible biodegradable material, so environmental impacts are minimized. Insulation is ultra-light, and never deteriorates. BPA-, BBP-, and phthalate-free plastic meet the highest possible standard for food-grade plastic in the industry. They neither hold nor impart flavor, and pose no risk of leaching into food over time.