If you're really worried about overheating, it also comes in a cooling version made out of Tencel.
I have this in the cooling version (in the color "avocado") and let's just say I've used it quite a bit in recent times. The large knit style is super chic, and the organic cotton is breathable (and there's nothing in it to create the weight *other* than cotton, so no uncomfy glass beads). I *love* it, and it's actually extremely cute, looking like a regular old fancy blanket! It's heavy, but still I take it from bed to couch and back to bed all the time as I WFH. It doesn't overheat on the couch (thanks to the fabric and the "holes" in the large knit), but provides a pleasant weight as I watch TV or work. And when it's layered over my duvet, it keeps me extra cozy and warm.
Promising review: "I love this napper a little too much. I carry it up and down stairs all day as I move between the bed and couch for crafting, reading, etc. I like to grasp onto something when I sleep (usually the edge of the pillowcase), so the loops are awesome for tucking in my fingers and toes. Unlike another weighted blanket I own, the napper is stylish so I don't mind if it's out in the living room, and I can wash it, a huge deal given how often it's used. It's a bit of a pain to dry (it took three cycles in the dryer, so next time I am going to hand dry). The weight is very comforting, and I don't have an issue with overheating, even using it in the middle of summer in a muggy climate." —Madeline B.
Get it from Bearaby for $249+ (available in three weights and nine colors).