Why consider it

  • There is no separate hub to clip onto clothing.
  • Reusable collection containers avoid a pumping-bag setup.

What to consider

  • Tube-free does not mean leak-proof; follow the instructions for movement and bending.
  • Plan charging for the motor units and check the exact flange/insert kit.

Specifications

At a glance

Power
Rechargeable motors
Milk collection
In-bra reusable containers; no external hub
Fit options
Double kit: 21 mm and 24 mm flange options; confirm seller kit
Collection capacity
5 oz per side included; optional 7 oz containers
Pumping options
Single and double kits available
Charging
USB cables supplied; wall adapter excluded
What comes with it
The Double kit includes two pumps, two 5 oz containers, 21 mm and 24 mm flange options and USB charging cables; a wall adapter is separate.
Fit & feel
Your bra holds the motor as well as the milk container, so bra space and flange size both matter.

Details, care & buying

Full specifications & kit details

Power
Rechargeable motors
Milk collection
In-bra reusable containers; no external hub
Fit options
Double kit: 21 mm and 24 mm flange options; confirm seller kit
Collection capacity
5 oz per side included; optional 7 oz containers
Pumping options
Single and double kits available
Charging
USB cables supplied; wall adapter excluded
Milk recording
App supports manually entered volume

Kit & specification notes

Double and Single kit contents differ: the Single kit excludes 21 mm flanges. Promotional insert sets and bundles may vary; confirm your seller’s package.

Manufacturer-listed specifications checked . Willow product details ↗

Build a complete clean spare

A spare container set does not replace every milk-contact piece. Choose a bundle by what you need clean and dry for the next session:

Splashguard Container Set
Includes the container pieces, duckbills and Splashguards. You still need diaphragms and suitable flanges.
Backup Parts Set
Adds diaphragms, but its listed contents still do not include flanges.

Neither bundle is another complete pump. Check your existing parts and the seller’s exact contents before ordering; the spare-kit worksheet helps count what you need for one or both sides.

Match the container before adding a Splashguard

Fit a Splashguard only to the newer Splashguard Container. Older Go containers lack the required vent and cannot take the guard. It reduces splashing; it does not make Go leak-proof in every position.

After pumping, transfer milk to a storage container and wash the collection pieces after every session. The current Splashguard container parts allow hand washing or the dishwasher’s top rack; that permission does not apply to the powered motors. Plan for fully dry parts before the next session.

See the milk-storage guidance and cleaning routine.

Sources: Willow’s Splashguard Container Set, Backup Parts Set and container compatibility explanation. Go spare-container options and Splashguard compatibility checked October 16, 2026; other profile and included-kit checks retain their existing dates.

Before you order

HEAD TO HEAD

Willow Go vs Elvie Stride 2: tube-free or external hub?

Compare Willow Go and Elvie Stride 2 by motor placement, collection, fit options, and practical trade-offs with source-linked specifications.

See the differences →

Compare the exact kit, compatible spare parts, return terms and warranty for your seller. Use the cost planner to include any extras you need. If using a US plan, start with the insurance checklist.

View manufacturer details

Manufacturer videos

Willow Go: Loss of Suction? Here's How to Place Your Diaphragm

This is a diaphragm-placement troubleshooting demonstration for Willow Go, not a complete getting-started video.

Watch on YouTube ↗ · Manufacturer source ↗ · Checked

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Instructions & support

This profile does not list a direct instruction manual. The model information below links to manufacturer support.

Manufacturer videos

Sources & further reading

Sources checked . Product packages and guidance can change.

Overview checked October 8, 2026; kit and fit details checked October 8, 2026. By Breast Pump Clarity. These scoped checks do not recheck every specification.