- Yellow level (very similar to a feather or down pillow): Typically for petite women, stomach sleepers that wear a small or medium shirt, someone who is used to a feather or down pillow, or young children.
- White level (medium): Most common for women who wear a medium to large t-shirt and men who wear a small or medium t-shirt.
- Green level (firm): Most common for women who wear an XL to XXL t-shirt and men who wear a Large to XL t-shirt.
- Blue level (extra firm): most common for women who wear XXXL + t-shirt and men who wear an XXL + t-shirt size.
Each level has about 30% more fill than the previous one. We also want to make sure that if you are a stomach sleeper that you go down a size in fill so you are getting the proper support.