The night after is when sleep does the most repair and is hardest to get. A weighted blanket is one of the few non-drug things with controlled evidence behind it, which is why it is here rather than a tea or a gadget.
What the evidence says
In a randomised controlled trial of 120 adults with chronic insomnia alongside a psychiatric diagnosis, four weeks with a weighted chain blanket took the Insomnia Severity Index from 21.7 to 9.2, against 21.2 to 18.8 in the control group, with 59% responding versus 5% (Ekholm, Spulber and Adler, J Clin Sleep Med, 2020). Read the population carefully: that is clinical insomnia, not the night after a festival, which nobody has studied. Ten participants moved from the 8 kg blanket to the 6 kg one, and one stopped because it made them anxious.
Why this one rather than a bead blanket
The Napper is knitted from thick cotton yarn with no filling, so the weight is the fabric and the knit stays open. That is the whole reason it is the pick here: you often run warm the night after MDMA, and a quilted blanket full of glass beads holds heat exactly when you do not want it. Reviewers consistently rate it among the more breathable options, with the trade-off that it is not very warm on a cold night.
Weight and fit
It comes in 10, 15, 20 and 25 lb (about 4.5 to 11 kg) and is sized for one person, not a shared bed. The usual rule is around 10% of body weight, and given that people in the trial stepped down rather than up, size lighter if you are between two. Around $199 to $279.
What it will not do
It is not a sedative and it will not shorten a comedown. If you are still overheated, still rolling, or your thermoregulation is off, leave it off and cool down first. The basics do more: a dark cool room, water, food, and no screen. Build the rest of the week with the recovery planner.
How we rate this
This verdict is based on the published specifications and the trial evidence cited above, not on a long-term test by us. Where we have used something ourselves, we say so.