The absolute best storage jar to keep your matcha (and all of it´s incredible benefits) fresher longer! These exclusive violet-black glass storage jars are specially designed to block the harmful light rays that cause decomposition while letting in the beneficial light rays that enhance potency (UV-A and ultraviolet). These special jars have been proven to keep matcha (and any organic matter) intact and at its optimal freshness for 6 months! They offer an airtight seal, are dishwasher safe and BPA free! With their sleek design, they can be stored just about anywhere. Choose from 3 different sizes!