Made Of promises a regular supply of pediatrician- and dermatologist-tested diapers for $18 less than they’d cost at retail. You get to set your own delivery frequency—choose to get a new box every 3, 4, or 5 weeks. These US-made diapers are free of things like petrochemicals, phthalates, and parabens, too. You can also try one of their risk-free samples before you sign up.