Buying guide
Buying nighttime underwear
Use the nighttime line’s own weight chart, then compare cost per pair.
Match nighttime underwear by its own sizing
Goodnites lists its sizes by weight, from XS through larger letter sizes. Use the current chart for that product instead of converting a taped-diaper or training-pant size.
For a product that already works overnight, compare the same line and size across packs. The cheapest pair in a different size won’t be a useful substitute.
Compare the cost per pair
Divide the package price by the total pairs in the selected size. A bundle of four 20-count packs contains 80 pairs. Larger sizes can have fewer pairs per pack, so recheck the selected option before paying.
If you use a separate product overnight, compare its cost per night rather than averaging it into the daytime pack.