Do these bags connect directly to the Medela freestyle pump, or do I have to pump into a bottle first?

I connect them to my Medela pump. They sell an adaptor for the Medela to pump into their bags. Medela bags are smaller and I always pump at least 4 oz from one of my breasts. So I just cut a slit in the flap of these bags (There is a double purple line that I use) and use the Medela adaptor part. Works great! best tip I got as a BF/working/pumping mom. I hated coming home after 14 hours and having to transfer milk and wash and sterilize bottles.

Can I reuse these bags or must throw away after use?

These bags are single use and are supposed to be thrown away. There's no way to "re-sanitize" them, so to speak.

Can I pump directly into these bags from a Ameda pump?

I do it that way. i use tape to attach the tops of the bags onto the pump. i pump both sides at the same time.The 4 reasons i pump directly into the bag is 1-less waste, i dont waste/spill a single drop transferring from bottle to bag2-less work bc no bottle to wash out3-saves time bc i dont have to pour from bottle to bag or wash out the bottle4-less bacterial contamination because there's no transferring step

Can this be use for Spectra?

Hi JT. Thank you for your question. Unfortunately, our Lansinoh pump adapters are not compatible with Spectra pumps.

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Description

🍼 Freeze, store, and nourish like a pro with Lansinoh’s ultimate milk storage bags!

LEAK PROOF CONFIDENCE - Double zipper and reinforced seams ensure zero spills, so your milk stays safe and secure.
PUMP DIRECT CONVENIENCE - Compatible with Lansinoh and major pumps for direct-to-bag pumping—cut prep time and mess.
SAFE STERILE EVERY TIME - Pre-sterilized, BPA/BPS-free bags give peace of mind for your baby’s purest nutrition.
COMPACT VERSATILE STORAGE - Lay flat or stand upright—optimize fridge and freezer space without sacrificing capacity.
FREEZE FLATTER STORE SMARTER - Maximize freezer space with ultra-flat design that thaws faster, preserving every nutrient.

Lansinoh Breast Milk Storage Bags (50 count) offer superior strength and stretch with reinforced double-sealed seams and a double zipper for leak-proof storage. Designed to freeze flatter than competitors, they maximize freezer space and enable faster thawing to protect milk nutrients. Pre-sterilized and BPA/BPS-free, these 6oz bags support direct pumping with compatible pumps, making milk storage safe, efficient, and convenient for busy parents.

Specifications

Brand	Lansinoh
Material	Low density Polyethylene (LDPE)
Capacity	5 ounces
Product Dimensions	4.25"W x 6"H
Recommended Uses For Product	Freeze, Refrigerate
Closure Type	Zipper
Number of Items	50
Special Feature	Freezer Safe, Resealable
Shape	Rectangular
Color	Purple
Item Weight	10.08 ounces
Model Name	Breastmilk Storage Bags
Number of Pieces	50
Size	50 Count
Reusability	Disposable
Material Type Free	BPA Free; BPS Free
Is Microwaveable	Yes
Unit Count	50.0 Count
Manufacturer	Lansinoh
UPC	885221921514 885334231319 885229680062 885323638808 885362969901 884674424597 885559420062 044677204507
Global Trade Identification Number	00044677204507
Item model number	LA-008
Is Discontinued By Manufacturer	No
Target gender	Unisex
Material Type	Low density Polyethylene (LDPE)
Material Composition	LDPE (low density polyethylene) and LLDPE (linear low-density polyethylene).
Additional product features	Freezer Safe, Resealable
Style	6oz
Batteries required	No
Is portable	No
Item Weight	10.1 ounces

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