Batteries not included. N/A More Absorbent Than Regular Luvs Features Nightlock: Our Largest Absorbency Area Ever Helps Lock Away Wetness, Even Overnight Locks Away Wetness Better Than Huggies Snug & Dry (Sizes 36) Money Back Guarantee: If You Are Not Satisfied, We Will Refund Your Money Luvs Super Absorbent Leakguards Diapers