No, large speedy isn't heavy (light to medium weight) and no magnets.
Here's a video link if that helps. There are lots of videos of LP bags, so you can
google it and that might help you make the best decision for you.
I am so in love with turquoise, such a fun color. I've received a couple compliments on it. I dont mind bolder colors especially during spring and summer. I also think the moss is very nice. But, my fav is the tourqoise.