Meet our Second Generation baby weighted sleep sack with fully integrated inner swaddle band for security and comfort. It is designed to help your baby feel calm, fall asleep faster and stay asleep longer. The gentle weight naturally reduces stress and increases relaxation through deep-pressure stimulation to give your baby feelings of security and comfort. What's Included: (1) Weighted Sleep Sack with Inner Swaddle Band Size: Indicated for newborns, infants, babies 8+ lbs, 0 - 6 months old Shoulder to toe measurement 26" Product fits true-to-size, we do not recommend sizing above baby's current weight. The weighted swaddle sack could be used for newborns, infants and babies up to 6 months old.