It comes down to two things: how much you move while pumping, and how you want to store your milk. Willow Go® is the best seller — ranked #1 for comfort and milk output, ideal for desk work, commutes, and everyday multitasking. Willow 360™ is for moms who need total freedom — it's the only pump that is 100% leak-proof in any position, including bending over or lying down, and it's the only pump with real-time milk tracking via smart sensors. Not sure? Take the pump quiz for a personalized recommendation.

Willow 360 offers complete leak-free mobility when pumping with our Spill-Proof Milk Bags. With its patent-pending latch technology, you can pump in any position, from bending over to laying down. Willow Go does not offer the same 360° mobility — instead, it offers 45° of leak-proof mobility for moms who will not be moving as much when pumping.

Willow 360 also offers more milk storage options. It’s compatible with our Spill-Proof Milk Bags and reusable containers, while Willow Go is only compatible with reusable containers.

Both pumps are app-connected, but Willow 360 is built with smart sensors that send real-time output information to the app — allowing you to track your milk volume while you pump. When pumping with Willow Go, you can enter your volume manually. Finally, you can manage your session from your Apple Watch when using Willow 360, while Willow Go can only be controlled via the app on your phone.

Traditional pumps tether you to a wall with cords, tubes, and external bottles — Willow pumps work entirely inside your bra, with no cords, no tubes, and no external motors. Both Willow Go® and Willow 360™ deliver hospital-grade suction comparable to double-electric pumps, but fit so discreetly that you can pump during a meeting, on a commute, or while getting things done — without anyone knowing. Every Willow pump is app-connected, FDA cleared, clinically tested, and ranked #1 in customer satisfaction among breast pump brands.

A traditional electric pump uses an external motor connected to flanges via tubing — you have to sit still, hold the bottles, and be near an outlet. A wearable pump like Willow Go® or Willow 360™ fits entirely inside your bra, runs on a rechargeable battery, and lets you move freely while pumping. Both deliver hospital-grade suction — the difference is freedom of movement and discretion, not performance.

Yes — Willow pumps were built for exactly this. Both Willow Go® and Willow 360™ fit fully inside the bra with no cords or external motors, so there's nothing visible under work clothes. You can pump during meetings, at your desk, or between appointments and control the entire session from your phone. Willow ranks #1 in customer satisfaction among breast pump brands, and 83% of moms say Willow Go made their postpartum life easier.

Yes. All Willow electric pumps are fully in-bra — no tubes, no cords, nothing to hold. Once the pump is seated in your bra, you start and control it from the Willow app on your phone (or Apple Watch, with Willow 360™). 77% of Willow Go moms say it's more discreet than other wearable pumps they've used.

Yes. All Willow electric pumps feature a longer flange tunnel than most wearable competitors, which gives elastic nipples more room and helps prevent painful contact during suction. The Breast Pump Sizing Kit ($24.99) makes it easy to dial in the right fit — and proper fit directly affects both comfort and milk output.

Flange size is based on nipple width, not bra cup size. A correct fit means your nipple moves freely in the tunnel without rubbing the sides or bottoming out. Willow Go® comes with 21mm and 24mm flanges, and the Breast Pump Sizing Kit ($24.99) includes a full range of sizing inserts for fine-tuning. The Willow Sizing Hub walks through the full measurement process step by step.

Consistent, frequent pumping is one of the most effective ways to build or maintain supply — and Willow's wearable design makes it easier to pump on schedule throughout the day without disrupting your routine. Both Willow Go® and Willow 360™ deliver hospital-grade suction, and because comfort directly affects the let-down reflex, a better-fitting pump can also support better output. Willow 360™ adds real-time milk volume tracking via smart sensors, which is useful for moms actively monitoring their supply.

In most cases, yes. Under the ACA, health insurance plans are required to cover breast pump equipment as a preventive benefit. Many plans cover Willow Go® or Willow 360™ in full or at reduced cost. You can also purchase any Willow pump using HSA/FSA funds directly at checkout. Learn more about how to use your insurance benefits for your Willow breast pump here.