Cotton Baby Scale Sling with 3 inch aluminum ring. Fabric is durable and waterproof. For use with a mechanical or digital hanging scale to weigh newborn babies. Perfect gift for graduation gift, NARM Exam passing, midwife, midwife student or assistant. Can be used as photo prop or keepsake for parent. Note: this listing is for sling only and NOT for digital or mechanical scale. RIng color may vary.