Hario French Press - Cafe Press Slim SHario French Press made out of heat resistant, high quality glass and is dishwasher safe. But our personal pet peeve with french presses isnt just that the ones that are easily available here are easy to break, but that the filter that sieves out coffee grounds weakens over time and lets in grounds into the cup of coffee. The sieve of this well designed french press is securely surrounded by rubber which means no breakage and no grounds in your french