Paired with Sandy''s diapers and the MEAF covers, these are the best absorbent liners! I use them on my daughter both day and night, since she''s a heavy wetter, and on my son''s nighttime diaper. The Sandy''s diapers are already very absorbent but paired with these liners (and possibly a fleece liner as well) you''ll have an impenetrable system that will keep your baby dry for up to 3 hours comfortably! Great for when you''re out and about, traveling or when your kiddo is down for the night. Highly recommend!