Size 1 diapers fit babies 8-14 lb.; Size 2 diapers fit babies 12-18 lb.; Leak Lock System helps eliminate leaks for up to 12 hours of long-lasting protection; Quilted Liner protects baby's skin by quickly absorbing wetness & pulling the mess away; Fragrance free, lotion free, paraben free, and free of elemental chlorine & natural rubber latex