Willow Go offers the best of both worlds — built with hospital-grade suction and a comfortable tug-and-release latch (the same you’re used to if you’ve used other wearables or a traditional pump) while fitting fully in-bra. It’s proof that you don’t need to sacrifice comfort and convenience for output.

Learn more about why Willow is different from other pumps, or check out our blog post for more information on how Willow pumps differ from manual and electric breast pumps.

Both pumps are fully in-bra with no bulky motors or cords, making it possible to pump on the go, and controllable via the Willow app. However, Willow Go cannot be controlled via Apple Watch, while Willow 360 can.

Willow Go is the perfect pump for every day with a 100% comfort rating and a tug-and-release latch designed for optimal output. Moms who use Willow Go say that they get as much, if not more milk when compared to other traditional or wearable pumps.

Unlike Willow 360, which offers moms 100% leak-proof mobility, Willow Go is leak-proof up to 45° — meaning you can still move around, but cannot use it while laying down or bending all the way over.

Willow 360 offers the option to pump into 4 oz milk bags or reusable containers, while Willow Go is only compatible with reusable containers. However, Willow Go offers a higher capacity option than Willow 360 — up to 7 oz per side.

Check out our comparison page for more, or take our pump quiz to decide which pump is right for you.

Yes, you can. Simply pay for your breast pump and accessories using your FSA/HSA debit card at checkout, or pay with another credit card and submit your receipt to your plan administrator for reimbursement.

Yes! We partner with Affirm to offer split pay and installment payment plans for Willow pumps. Learn more about our financing options.

Willow Go holds up to 5 oz of milk (10 oz total). If you pump more than 5 oz per side, purchase our 7 oz containers to pump up to 14 oz per session (sold separately).

We know every ounce matters when it comes to pumping and breastfeeding, so we engineer our pumps to optimize milk expression.

Willow Go offers maximum suction of up to 295 mmHG per side. It’s also a closed-system pump, just like hospital-grade pumps, to keep your breast milk separate from the pump mechanisms for cleanliness and hygiene.

No. But Willow Go works best with a pumping or nursing bra that’s snug and stretchy (no underwire!) with full coverage so just the top of the pumps peek out. Avoid bras with underwire or padding. The Daily Pumping Bra is designed specifically for Willow pumps, making it a great choice for optimal comfort and output.

Yes! Willow Go is covered under a 12 month warranty from the purchase date. Accessories - all replaceable pump parts including but not limited to flanges, containers, diaphragms, duckbills, chargers and sizing inserts- are covered under a 90 day warranty. Please review our warranty policy.

Since breast pumps are single-user devices, use by more than one person, including purchasing second hand, will invalidate the warranty. Please keep your original proof of purchase from onewillow.com or an authorized retailer as it is required to exercise your warranty.

Yes — Willow Go was specifically engineered for moms with elastic nipples. Its flange tunnel is significantly longer than other wearable pumps, giving elastic nipples more room before the tunnel opening and preventing painful contact with the end of the tunnel during suction. The smooth, uninterrupted inner flange surface also reduces friction and abrasion. Because nipple discomfort can inhibit the let-down reflex and reduce milk output, this design difference directly affects how much milk you express. Use the Breast Pump Sizing Kit to confirm your fit before your first session.

Yes. Willow Go sits fully inside your bra with no cords, tubes, or external motors, so there's nothing visible and nothing to hold. The Willow app lets you start, stop, and adjust suction from your phone without touching the pump. Moms report pumping on video calls, during commutes, and between meetings without anyone knowing.

Willow Go's ComfortFlow™ technology is built around the principle that comfort and output are directly connected. Its 105° flange angle, longer tunnel, curved edges, and wide flange cone are clinically designed to reduce nipple pain and improve milk expression. In an independent survey of 500 pumping moms, 71% said Willow Go gives better milk output than their other wearable pumps.

Willow Go's rechargeable battery lasts up to 8 pumping sessions on a single charge, making it fully portable for a full workday — no outlet required. It charges via USB, so it's compatible with any standard USB power source, laptop, or portable battery pack.

Willow Go has fewer parts than most pumps and all parts are dishwasher-safe, making cleanup fast between sessions. For on-the-go cleaning, the Travel Cleaning Pack has everything you need. Replace pump parts every 90 days to maintain maximum suction and efficiency — the Willow Go Backup Parts Set makes it easy to keep a spare set ready.

Many insurance plans cover the Willow Go in full or at reduced cost under the ACA's preventive care benefit for breast pumps. You can also purchase using HSA/FSA funds at checkout. See the full insurance coverage guide for step-by-step instructions on checking your benefits.