Shield Maiden Nipple Shields: 17mm vs 24mm vs 27mm Fit Guide
By Ceres Chill — The Breastmilk Storage Game-Changer | Published: 2026-10-17
Category: Tips & Care
Learn when to use 17mm, 24mm, or 27mm Shield Maiden Nipple Shields. Get a quick answer, fit tips, and practical advice for pain-free breastfeeding.
Quick answer
Choose the size that matches your nipple diameter before pumping or feeding. Measure across the widest part of your nipple (areola excluded). A 17mm shield fits nipples up to 17mm, 24mm fits up to 24mm, and 27mm fits up to 27mm. A proper fit means the nipple moves freely inside the tunnel without rubbing the sides.
How to measure your nipple for the right size
Measure your nipple diameter at the base (where it meets the areola) using a soft measuring tape or ruler. Do this before a feeding or pumping session when your nipple is at its resting size. Write down the measurement in millimeters. If you're between sizes, choose the larger shield to avoid pinching.
The Shield Maiden Nipple Shields are made of food-grade silicone with a velvety baby-side texture and a smooth mama-side for good adhesion. The silicone is colorful at room temperature for easy spotting and becomes neutral at body temperature for a natural feel.
Frequently asked questions about Shield Maiden sizing
- What happens if I use a shield that is too small?
- A too-small shield can pinch the nipple, restrict milk flow, cause pain, and lead to nipple damage. Your nipple may rub against the tunnel walls, increasing friction. If you feel pinching or see your nipple pressed against the sides, size up.
- What happens if I use a shield that is too large?
- A too-large shield may pull in areola tissue along with the nipple, reducing suction and making it harder for your baby to latch effectively. Milk transfer may decrease. If you see areola pulled into the tunnel or your baby struggles to stay latched, try a smaller size.
- Can I use different sizes for each breast?
- Yes. Many mothers have different nipple sizes on each side. Measure both nipples separately and use the appropriate size for each breast. It's fine to buy a set with two different sizes or the Magic set with all three sizes.
Product facts
- Shield Maiden Nipple Shields - 17mm, 24mm, 27mm: Shield Maidens are made of laboratory-tested, food-grade silicone with a velvety skin-texture on the baby side and a smooth texture on the mama side for adhesion. They are colorful at room temperature and neutral at body temperature. Each set includes (2) shields and a carrying case, or (3) shields with one of each size for the Magic option. The dual-texture silicone helps the shield stay in place while feeling natural for your baby. The color-change feature lets you quickly see the shield if it drops, and the neutral body-temperature color helps your baby accept it more easily.
