I have used weighted blankets for decades. For me, a major benefit is the reduction of air space around my body. This reduces stimulation by causing all of my tactile sensations to be the same.

I used to mention arranging sleep environments for extreme cozy comfort but nobody seemed to notice a benefit or maybe they never tried it.

I use two crocheted afghans that do the trick. In the middle of summer, I a quality soft sheet, a velux blanket, an afghan in single layer, and an afghan folded double with a second fold at the top so I have no air circulation around my body. Sometimes, I will even wear velour gloves to remove all tactile sensation to my hands.

When I sleep in my reclining chair, I cocoon in a fleece blanket with my hands tucked between the folds. My wife says when she see me sleeping like this, she can tell I am sleeping deeply.

I also find I do better in all cotton sleep ware. Cotton maintains even temperature better than most synthetics.

Sweet dreams.