About what you'd expect from the parents. Just as you exhale the third hit, you'll feel the relaxation wave. It's ridiculous.
Effects are very similar to a Blackberry Kush or GMO Cookies.
I'll start off by saying I've had both Blue Dream and Blue Haze and Blue Haze was by far my favorite.
Endless energy, creativity, focus, gets you fully in the zone. Blue dream chilled me out but there is always an underlying melancholy vibe. No chance of that with this.
I've had this in both pre-roll and 3.5g pouch, purchased from a few different shops. Consistently great quality each time. Healthy, small/medium buds that always weigh out. This particular sativa strain is high-energy, music and visuals are enhanced. Very bright experience. Tried their other strains and their worth it.
I use this at work, a physical labor job, for energy and focus. A bowl of this, a Monster Energy drink, and Buckethead playing in my earbuds. Now the Bruce Banner turns in to Hulk. I am dancing through the work. The work is in my rear view mirror and I'm asking for more. I'm pissing off my co-workers because when you're tired and miserable, nothing is worse than having a 56-year old pothead putting you to shame.
I will say, it's one of those "focus" strains that can leave you dizzy if you're focused on something for a while and then get pulled away suddenly. Like stepping off the Merry-go-round.
Harsh smoke and deep cotton mouth would be considered the downsides.