Willow Breast Milk Bag Flatteners

The Willow Breast Milk Bag Flatteners holds 36 oz, per Willow. Set of six flatteners that hold milk bags flat in the freezer, sized around 6 oz bags and fitting most bags including wide ones with spouts.

  • 36 ozCapacity
  • $19.99List price

All milk storage bags and bottles

How the Breast Milk Bag Flatteners stacks up

Against the 32 milk storage bags and bottles we track. The shaded band is where the middle half of them fall; the dot is this one.

Capacity36 ozBiggest capacity of 20 milk storage bags and bottles

Above the typical range for milk storage bags and bottles (6 oz to 8 oz).

This one
4 ozmiddle 6 oz36 oz
Price$19.9914th lowest price of 22

Within the typical range for milk storage bags and bottles ($10.99 to $19.99).

This one
$7.95middle $17.43$39.99

What sets the Breast Milk Bag Flatteners apart

Measured against the 32 milk storage bags and bottles we compare, from each maker's published specs.

  • Biggest capacityof the 20 milk storage bags and bottles with it published: 36 oz

Next to its closest matches

Fit and use

As Willow lists it.

Capacity36 oz

Where to buy the Breast Milk Bag Flatteners

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

Willow Breast Milk Bag Flatteners
TypeMilk storage
List price$19.99
Capacity36 oz
BPA-freeYes, per the maker
HSA/FSAEligible, per the maker or supplier
Ask the meadow

Breast Milk Bag Flatteners: questions answered

From Willow's published specs, last checked 2026-11-05.

How long does breast milk keep?

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.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

Where these specs come from

Last checked 2026-11-05. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.