Expecting moms and healthcare pros, these pregnancy wheels are absolute lifesavers for tracking due dates! You get two wheels in the package, each about 5.11 inches in diameter - perfect for keeping one at home and one in your bag. Made from durable plastic that'll hold up to daily use in clinical settings or at home. Super simple to use - just rotate the wheel to line up the last menstrual period (LMP) date, and it instantly shows you the estimated due date, current gestation in weeks and months, and important milestones throughout the pregnancy. The printing is clear and easy to read with days, weeks, and months all marked. Great for OB-GYNs, midwives, nurses, doctors, and of course expecting mothers who want to track their pregnancy progress. Much more reliable than trying to calculate manually or remember dates. The rotating mechanism is smooth and precise. Having two means you can share with your healthcare provider or keep one as a backup. Perfect for pregnancy consultations, prenatal classes, or just satisfying that curiosity about when your little one might arrive. Takes the guesswork out of pregnancy dating and helps everyone stay on the same page about timelines and development stages.