Keep your baby cozy and comfortable with up&up diapers. The contoured shape fits Baby better and the thinner design means less bulk. Wood-fluff pulp material absorbs quickly to keep baby dry and happy throughout the day. The soft lining is hypoallergenic to prevent skin irritation and redness, and the stretchable waist and sides provide excellent leakage protection. Size 4. Small pack has 31 diapers.