I use Gravity Blanket. I can take a pic when I get home from work.

Not sure how much it costs. I ordered it from Kickstarter before it was released, so I got a discount.

It definitely doesn't fit the whole bed. It is xl twin sized. I believe they do have it up to 25 lb

Edit: I got mine delivered Feb 28, 2018... so it's pretty new. Apparently it's $250. But it's plush kinda.