On the chart below, locate your height and overarm measurement. To get your overarm measurement, stand with your hands by your sides and measure around the broadest part of your chest and arms.

Regular, Large, and XL refer to the quilt size
20", 25", and 30" refer to the sheet size

If you are an "active" sleeper or have a "wide" sleep position, consider sizing up to accommodate your sleep style. When in doubt, size up. Unlike mummy bags, there's no thermal disadvantage to a larger size Zenbivy because the quilt is always free to wrap snuggly around you. Bigger is always more comfortable and just as warm. 

Zenbivy sheets are designed to fit most standard size mattresses on the market, in both rectangular and tapered styles.

Find your Bed on the image below and match it to its recommended Dry Sack size. Don't worry, with the recommended size there will still be room to throw in your Zenbivy pillow and even a down jacket.

You can expect your Bed to compress down to about half the size of its recommended Dry Sack. Example: 7L compresses down to 3-4L, 10L down to 5L, etc