From the high quality pens to the long lasting rechargeable batteries, the Major League Extractions vape pens are by far the best on the market.All Major League Extractions Vape Pens are a whopping 1.1 gram of concentrate with a high THC level of 94-97%! Warning: Unfortunately there are several fake Major League products out there. All of ours MLE pens are sourced directly from the manufacturer and contains a QR code for added security. Be wary of fake pens with low quality distillate! Do not store in cold temperature. When the distillate gets cold it will thicken and clog the pen. To clear this clog, keep your pen in room temperature environments. If the pen does get clogged, hold it between your hands to warm it up for 5 min, and try to use it again. Once you get it to smoke again, blow into the pen and smoke should come out of the charger area. Usage & handling – Please note that vape cartridges should be stored in a cool, dark place, away from direct sun or heat. Cartridges and pens should be stored vertically to avoid leaks. Refunds will not be provided for user error related issues.