Seventh Generation Overnight Diapers Stage 4 (22-37 lbs.) 24 Diapers Seventh Generation Overnight Diapers Stage 4 (22 to 37 lbs) are the natural choice for naps, long trips, or whenever baby needs extra protection. Overnights are free of fragrnaces, latex, chlorine, and best of all, worries. Thanks to a new and improved core, they're Seventh Generation's most absorbent diapers ever. Everyone sleeps better when baby wears new super absorbent Free & Clear Overnight Diapers. In celebration with their partnership with Dr. Seuss's The Lorax (only in theaters, 2012), Free & Clear Overnight Diapers now feature delightful limited-edition character prints. Extra Protection Great for Travel Free of Chlorine Processing Free of Fragrances and Latex Made with renewable resources As always, their diapers are FREE of chlorine processing; they are also FREE of fragrances, latex and petroleum-based lotions, so you get to decide what touches your baby's sensitive skin. Their diapers now have an improved environmental footprint, due to a redesigned core that is more efficient at absorption and uses less processed chlorine free wood pulp. What is a Free & Clear Diaper? Their Free & Clear diapers are FREE of chlorine processing; they are also free of fragrances, latex, and petroleum-based lotions, so you get to decide what touches your child's sensitive skin. Best of all, they offer premium absorbency and soft, cloth like comfort for your little one. What changed in your transition to Free & Clear Diapers? Their Free & Clear diapers have a redesigned, lighter-weight core that is both more efficient at absorption and uses less wood pulp. They still offer the same premium absorbency and comfort for your baby, but these changes, as well as a reduction in the size of their plastic packaging, mean that each pack of Seventh Generation diapers now contributes less overall landfill waste than before.