Here's some more information for you to consider.
If you're only using these chains infrequently, you would think you should get the cheapest available, right? Wrong. I would choose chains that are easiest to put on (so you don't have to struggle on the side of the road) and I would choose durable chains since you'll likely be driving on pavement/roadway for short distances and the cheaper chains are likely to fall apart under those conditions. You also want self-adjusting tensioner chains so they keep the chains tight and reduce the chance of damage to your wheel wells!
There are two main types of chains, cable and link. Cable are generally cheaper and in my opinion are crap. Solid chain links are far more durable. The common chain patterns are diagonal, ladder, and diamond pattern. Diagonal and ladder type tend to vibrate more in use. The diamond pattern chains have better lateral stability and better grip overall, with less vibration.
So, that's why I recommend self-adjusting, diamond pattern chains. They are the easiest to mount, most stable, best grip, and least likely to loosen and damage your Highlander. YMMV.