Elvie Nipple Cushions 15mm, 17mm or 19mm: Fit Guide
By Hatchery Cribs Singapore | Published: 2026-11-05
Category: Buying Guides
Choosing between the 15 mm, 17 mm and 19 mm Elvie Nipple Cushions? Use these fit checks and decision rules to pick the size that actually improves comfort.
Quick answer
Start with the 17 mm Elvie Nipple Cushion if you are unsure, then move down to 15 mm if you see a ring of areola being pulled into the tunnel, or up to 19 mm if your nipple rubs against the sides. The right size should feel secure without pinching, and your nipple should move freely without excess tissue entering the cushion.
Why cushion size matters more than shield size alone
Elvie Nipple Cushions are soft-silicone inserts that sit inside your 24 mm breast shield to narrow the opening. They let you tailor the pump to your body without buying a whole new shield. The cushion, not the shield, is what actually touches your nipple, so its internal diameter determines comfort and how efficiently milk is drawn.
A cushion that is too small can pinch or compress the nipple, while one that is too large lets areola tissue get pulled into the tunnel. Both reduce comfort and can affect output. That is why the 15 mm, 17 mm and 19 mm options exist: they cover a range of nipple base sizes with a softer, more forgiving material than rigid plastic.
When to size down or size up
Sizing down is usually the right move if you notice a halo of darker skin being drawn into the cushion during pumping, or if your nipple feels like it is moving too freely and rubbing. A smaller cushion creates a snugger seal around the base of the nipple.
Sizing up helps when the cushion feels tight, leaves a sharp ring mark, or your nipple feels compressed against the sides. Discomfort during let-down, or a nipple that looks blanched at the tip after pumping, are signs to try the next size up. These are general fit signals, not medical advice; if pain persists, speak to a lactation consultant.
The trade-off: soft silicone versus rigid sizing
Elvie Cushions are made from ultra-soft, flexible silicone that gently hugs the natural shape of the nipple. That flexibility can make the fit more forgiving than a hard plastic shield, but it also means the cushion may stretch slightly during use. If you are right at the boundary between two sizes, choose the smaller size for a firmer seal, or the larger size if you prioritise less friction.
Because the cushions are a separate accessory, you can keep using your existing 24 mm breast shields and simply swap the cushion. That makes trying a different size less costly than replacing the whole shield, but it also means you need to keep track of which cushion belongs to which shield if you pump on both sides.
Decision rules for choosing your Elvie Nipple Cushion size
- Measure before you guess: Use a ruler or the Elvie sizing guide to measure the diameter of your nipple base in millimetres. If your measurement falls between two sizes, start with the larger size and size down only if you see areola being pulled in. Write down your measurement so you can reorder the same size later.
- Check the fit during pumping: While pumping, look at the cushion tunnel. Your nipple should move freely without rubbing the sides, and no more than a few millimetres of areola should be drawn in. If the nipple is compressed or the tunnel looks mostly filled by areola, adjust the size. Adjust one size at a time and pump for a full session before deciding.
- Use comfort and output as your tie-breaker: If two sizes both look acceptable, choose the one that feels more comfortable and maintains your usual milk output. Discomfort or a drop in output is a sign to switch. Keep a spare cushion in the other size so you can swap mid-session if needed.
Product facts
- Elvie Nipple Cushions for Pump & Stride - 15mm/ 17mm/ 19mm (2 pack): Soft-silicone nipple cushions available in 15 mm, 17 mm and 19 mm, sold as a 2 pack and compatible with all Elvie 24 mm Breast Shields. You get two cushions per pack, so you can use one on each side or keep a spare, and you can try a different size without changing your existing shields.
Elvie Nipple Cushions for Pump & Stride - 15mm/ 17mm/ 19mm (2 pack)
Who should choose which size
Best for
- Pumpers who see areola tissue being pulled into the tunnel and want a snugger seal (try 15 mm first)
- Most first-time cushion buyers who want a balanced starting point (try 17 mm first)
- Pumpers who feel pinching or rubbing against the sides of the cushion (try 19 mm first)
Not for
- Anyone using a breast shield size other than Elvie 24 mm, because these cushions are designed to fit those shields
- Pumpers who need a complete new shield setup rather than an insert
- Those with persistent pain or damage, who should seek help from a lactation professional before changing accessories
