How big are the disposables? February 03, 2020 08:51 Updated Disposables are 0.38” x 4.63” — slightly longer than a traditional 100s cigarette. Related articles What can I find in the blu® accessories section? What are the nicotine levels and ingredients in the disposables? How do disposable electronic cigarettes work? How do I know when my disposable is empty? Where can I purchase blu® Disposables?