Haakaa Silicone Nipple Ruler
A flexible silicone ruler with sizing holes from 10 to 30 mm in 1 mm steps and an edge scale in mm and inches, used to pick flange or nipple shield sizes.
- $4.99List price
Silicone Nipple RulerSee it on Haakaa's site
How the Silicone Nipple Ruler stacks up
Against the 34 pump parts and flange inserts we track. The shaded band is where the middle half of them fall; the dot is this one.
Price$4.99Lowest price of 31 pump parts and flange inserts
Below the typical range for pump parts and flange inserts ($10.99 to $52.49).
This one
$4.99middle $27$89.99
What sets the Silicone Nipple Ruler apart
Measured against the 34 pump parts and flange inserts we compare, from each maker's published specs.
- Lowest list priceof the 31 pump parts and flange inserts that list it: $4.99
Next to its closest matches
- Papablic Duckbill Valves for Spectra and MedelaNext to it, the Silicone Nipple Ruler is $5 less.
- Zomee Flex Breast ShieldsNext to it, the Silicone Nipple Ruler is $5 less.
Fit and use
As Haakaa lists it.
| Material | Silicone |
|---|
Listed features
- Sizing holes in 1 mm steps from 10 to 30 mm
- Edge scale in millimeters and inches
- Can be boiled or steam sterilized
Worth checking
- Measurement only; does not include any flange
Where to buy the Silicone Nipple Ruler
Prices and availability change. We may earn a commission from some links.
good to know
- Check for recalls: Search the agency's recall list with the model number and date code from the label: FDA recalls list.
- Breastfeeding and pumping: see the AAP's breastfeeding pages and the FDA's breast pump page. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| Haakaa Silicone Nipple Ruler | |
|---|---|
| Type | Pump part or flange insert |
| List price | $4.99 |
| Material | Silicone |
| Maker's use notes | Adult use only. Inspect before each use; discard at first signs of damage. Keep out of reach of children and pets. Measurements are a reference; check your pump's own sizing guide. |
More parts
- MomcozyNipple Ruler$5$5.99
- PapablicDuckbill Valves for Spectra and Medela$9$9.99
- ZomeeFlex Breast Shields$97 flange sizes$9.99
- SpectraBackflow Protector$10$10.49
- SpectraReplacement Tubing$11$11.49
- SpectraDuckbill Valves Set$14$14.99
- ElviePump Spout and Valve Kit (2 pack)$16$16.99
- ZomeePumping Tote Bag$29$29.99
Where these specs come from
- haakaausa.com/products/haakaa-silicone-nipple-ruler
- haakaausa.com/products/haakaa-silicone-nipple-ruler
Last checked 2026-11-05. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.