Under the charts there’s a link that says Choose Your Size. There’s an explanation under girth about size. Tried copying and pasting below. At 190 lbs, my guess is you probably want wide/broad.
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<h2>Length:</h2>
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We have found that a hoodless sleeping bag works best if you can pull it up around your ears on cold nights or bundle it up around your neck to seal out drafts. You’ll want to sleep in a warm hat, your jacket hood, and/or a Goose Down Hood in extreme cold.
The listed length of the bag should come up to the <b>ears</b> of a person that height. The length factors in space for your feet, length to come around your body girth, and around the shoulders. The foot box and sizing work well for stomach sleepers and side sleepers as well as back sleepers.</p>
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<h2>Girth:</h2>
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The dimensions of the bag are measured with it opened up, stretched tight, from one edge to the other. If you already have a bag to compare, measure the same way.
To measure your body use a string or cloth tape measure around the thickest part of your chest including your arms. Add 8″ or more for wiggle room. <b>If you like extra wiggle room size up in width!</b>
You can also use a sheet or blanket pinned to the specified width to get an idea of how much girth you’ll have.</p>