# Breast pumps with a closed system that keeps milk out of the motor

Which breast pumps have a closed system that keeps milk out of the motor?

Willow Pump Willow 360® Wearable Breast Pump: The maker says the pump has a patent\-pending latch designed to be leak\-proof in any position\. The store describes the pump as 100% leak\-proof, hospital\-grade, app\-controlled, and supported by 360 Care\. Willow Pump Willow Sync: The review reports that Sync shares an open, air\-vented design that stays sealed only to about a 45\-degree lean, so bending over or lying down risks a spill\.

### 1. [Willow Pump Willow 360® Wearable Breast Pump](/products/ucp/onewillow-com/7302948618333) (sold by onewillow\.com)

The maker says the pump has a patent\-pending latch designed to be leak\-proof in any position\.

- Leak\-proofing: The maker says the pump has a patent\-pending latch designed to be leak\-proof in any position\. (guide) <https://onewillow.com/products/willow-pump-360>
- Store description: The store describes the pump as 100% leak\-proof, hospital\-grade, app\-controlled, and supported by 360 Care\. (listing) <https://willowpump.myshopify.com/products.json>

### 2. [Willow Pump Willow Sync](/products/ucp/onewillow-com/7942046318685) (sold by onewillow\.com)

The review reports that Sync shares an open, air\-vented design that stays sealed only to about a 45\-degree lean, so bending over or lying down risks a spill\.

- Leak\-proofing: The review reports that Sync shares an open, air\-vented design that stays sealed only to about a 45\-degree lean, so bending over or lying down risks a spill\. (review) <https://highlo.com/articles/willow-pump-worth-it/>
- Store description: -

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Written 2026-10-31T07:44:22.308Z.

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