Breast Pump Shield Inserts - 5 Sizes, Better Fit & Suction

Double Your Milk Output—Perfect Fit for Smaller Nipples

The Problem: Your breast pump shield is too large, causing painful pumping and poor suction. You're barely getting 2oz per session even though you know you have a strong flow. The standard 27mm shield doesn't fit your smaller nipples, and you're frustrated with wasted time and low milk output.

The Solution: Tiny Bloom Shield Inserts reduce the size of your pump shield to create the perfect fit for smaller nipples. Available in 5 sizes (15mm, 17mm, 19mm, 21mm, 24mm), these cushioning inserts improve suction, eliminate pain, and can double your milk output by ensuring proper fit.

Why Parents Rate This 4.75 Stars (4 Reviews)

"Love the inserts I bought. I was struggling with pumping for months knowing I had a strong and fast flow but barely managing to get 2oz each pump. With the inserts I'm easily pumping 4oz each time," says Alexandra. "Super fast shipping too which was great."

"Comfortable and perfect sizing," says Paige.

Why You Need Shield Inserts

• Double Your Milk Output: Proper fit creates optimal suction. Alexandra went from 2oz to 4oz per session—that's 100% increase just from using the right size.
• Eliminate Painful Pumping: Too-large shields cause nipple rubbing, friction, and pain. Inserts cushion your nipple for comfortable pumping.
• Improve Suction & Efficiency: Correct fit creates better vacuum seal, meaning more milk in less time.
• 5 Sizes for Perfect Fit: 15mm, 17mm, 19mm, 21mm, 24mm—find your exact size for optimal performance.
• Ideal for Smaller Nipples: Standard 27mm shields are too large for many women. Inserts make existing shields smaller.
• Compatible with Bluetooth Pumps: Fits Tiny Bloom Bluetooth breast pumps perfectly.
• Cushions & Protects: Soft silicone cushions nipple during pumping sessions.
• Sold Individually: Buy just what you need—one insert per breast or have spares.

Available Sizes

• 15mm: For very small nipples
• 17mm: For small nipples
• 19mm: For small-medium nipples
• 21mm: For medium nipples
• 24mm: For medium-large nipples

How to Measure Your Nipple Size

Use our free measuring card to accurately measure your nipple diameter:

1. Measure your nipple diameter (not areola) after pumping when nipple is at its largest
2. Add 2-4mm to your nipple diameter for proper fit
3. Choose insert size that matches this measurement
4. Example: If nipple is 15mm, choose 17-19mm insert

Signs You Need a Smaller Size:

• Too much areola is being pulled into the tunnel
• Nipple rubs against sides of shield
• Pumping is painful
• Poor suction or low milk output
• Nipple looks damaged or irritated after pumping

Perfect For

• Smaller Nipples: Standard shields are too large
• Painful Pumping: Shield is causing friction and discomfort
• Poor Suction: Not getting good vacuum seal
• Low Milk Output: Getting less milk than expected
• Bluetooth Pump Users: Compatible with Tiny Bloom Bluetooth pumps
• Exclusive Pumpers: Need comfortable, efficient pumping sessions

What's Included

• 1x Shield insert (choose size: 15mm, 17mm, 19mm, 21mm, or 24mm)
• Soft silicone cushioning
• Compatible with Tiny Bloom Bluetooth Breast Pump
• Sold individually

How to Use

1. Measure your nipple size using measuring card
2. Choose appropriate insert size
3. Place insert inside pump shield
4. Position pump on breast with nipple centered in insert
5. Hold insert in place as you position pump for first use
6. Begin pumping—insert will stay in place during session

Technical Specifications

• Sizes Available:  17mm, 19mm, 21mm, 24mm
• Material: Soft, food-safe silicone
• Compatibility: Tiny Bloom Bluetooth breast pumps
• Function: Reduces shield size, cushions nipple, improves suction
• Quantity: Sold individually (1 insert per purchase)
• Cleaning: Dishwasher safe, sterilizer safe
• Weight: 10g

Care & Cleaning Instructions

• Wash before first use
• After each pumping session, rinse immediately
• Wash in dishwasher (top rack) or by hand with warm soapy water
• Sterilize regularly using steam sterilizer or boiling water
• Air dry completely before next use
• Inspect regularly for tears or damage and replace if needed

Why Proper Fit Matters

Using the wrong size pump shield is one of the most common reasons for:

• Low milk output (can reduce output by 50% or more)
• Painful pumping and nipple damage
• Poor suction and inefficient pumping
• Longer pumping sessions with less milk
• Frustration and giving up on pumping

The right fit creates optimal suction, protects your nipples, and maximizes milk output—making pumping comfortable and efficient.

Backed by Tiny Bloom

• 4 sizes for perfect fit (17-24mm)
• Double milk output with proper fit
• Eliminate painful pumping
• Improve suction and efficiency
• Soft silicone cushioning
• Compatible with Bluetooth pumps
• Free measuring card available
• 4.75★ rated by parents
• International shipping available

Ready to double your milk output and eliminate pain? Join pumping mums worldwide who've transformed their pumping experience with the perfect-fit shield inserts.