Any weighted blanket with glass beads. Plastic beads may be cheaper but they're less heavy and hold more heat. Bamboo tends to be a cooling material and there are others out there. Good luck! More on reddit.com

Keep in mind no cooling blanket is going to be cooler than without the blanket. Cotton and other natural fiber breathe better, but if you’re comfortable at your current sleeping temperature, you’re going to feel warmer no matter what. More on reddit.com

My bf tends to get hot a lot and I got him the Gravid one. They have a cover that's supposed to keep you cool. More on reddit.com

As someone who very easily overheats & is prone to hot flushes I adore the Kudd.ly Cooling Weighted Blanket . I love it so much that I own two so that I can alternate when one is in the wash. The only real “con” is that it only comes in one size/weight (4.7kg). I love that I can easily wash it at home in my washing machine & have washed both of mine several times with no issues. The fabric is really nice, soft and smooth to the touch. It stays relatively cool throughout the night which is much appreciated especially during the warmer months. I own both colours & much prefer Cooling Mist which is a beautiful vibrant shade unlike Glacial Grey which is a lacklustre off-white shade in person. I v. recently picked up the Oodie Thumper Weighted Blanket .  It’s beautiful and the fabric is that thick plush material more typical to weighted blankets. It’s still v. new to me so I haven’t washed it yet but it feels very luxe & well made. The brand offers a mix of both plain weighted blankets & various licensed collabs which is nice especially for gifts imo (although the latter seem to be limited edition & prone to selling out). Their blankets typically come in three different weights (4.5kg, 6.8kg and 9.kg). They are also advertised as being machine washable although do note that the 9kg blanket may not be suitable to be washed in an average sized washing machine due to max load capacity. More on reddit.com