Affiliate disclosure. Some links may earn Jaan Labs LLC a commission, at no extra cost to you. Sponsors are labeled. Payment and commissions do not affect rankings or reviews. Read the disclosure.

Device · Checked October 16, 2026

Willow Go

An in-bra pump. Willow calls the suction hospital-grade and says the kit is controlled in an app.

Willow Go product image
Image: Official page image on onewillow.com. Checked October 16, 2026.

Verdict

An in-bra pump when you want the kit page's suction levels and container sizes in one place.

Reviewed by Jaan Labs, updated October 16, 2026

Best forAn in-bra pump when you want the kit page's suction levels and container sizes in one place.

Who it's for
People who will use a phone app and who still need a flange fit checked by a person, not by a product page.

Willow's kit page calls Willow Go a wearable breast pump with customizable, hospital-grade suction and app control. The same page describes 15 levels, up to 295 mmHg per side, a rechargeable battery it says lasts up to 8 pumping sessions, and a fit it says covers 98% of nipples with the included inserts. It says the kit includes 15–19 mm inserts and 5 oz and 7 oz SplashGuard containers, and that the pump is fully in-bra. The shop badges it HSA/FSA. Flange size and supply questions belong with a lactation consultant or clinician. This listing does not size a flange.

Pros

  • The kit page says 15 suction levels, up to 295 mmHg, and app control.
  • It names 5 oz and 7 oz containers and says the battery lasts up to 8 sessions.

Cons

  • The kit's product data listed $299.99. The page did not put a lower sale price on that offer.
  • An HSA/FSA badge is not coverage. Flange fit is a question for a lactation consultant or clinician.

Related listings

  1. AppGlowA family of apps from period tracking through a baby log.
  2. AppNatural CyclesA paid temperature method the company describes as FDA-cleared birth control.
  3. DeviceTempdropOvernight temperature when a waking thermometer is unrealistic.