Rolled up and ready to smoke, Pre-Roll packs are a convenient and effective way to consume cannabis. Pre-Roll packs generally contain smaller pre-rolls so that each can be consumed in one sitting. Effects Happy Relaxed Sleepy Terpenes Terpenes are the primary constituents of essential oils and are responsible for the aroma characteristics of cannabis. Terpenes largely contribute to the consumer's experiences and also enhance many therapeutic benefits, especially as aromatherapy.