Because weighted blankets are filled with tiny glass or plastic pellets, expect them to be bulkier — those made with plastic beads more so, since more of this filler material is needed to get to the right weight — than your average blanket. Thickness doesn’t always correspond to temperature, however, so this aspect generally comes down to personal preference. All in all, you’re looking at a blanket that’ll be somewhere between a ½ inch and 1 inch thick.
In terms of fabric, blankets mostly come in cotton or minky, a fabric that has a soft, fleecelike feel. Cotton is often cooler and more breathable than minky, so that right there can help you narrow down your choices depending on whether you’re a hot or a cold sleeper.
If you’re not ready to commit to one style, many models are designed to be slipped into a cover. This also helps immensely with cleaning because you can remove the outer fabric to launder instead of lugging the whole thing to your washing machine or laundromat.