# Willow Go vs Spectra S1 Plus: specs and price compared

A sourced, side-by-side comparison of the Willow Go (Willow) and Spectra S1 Plus (Spectra Baby USA) among breast pumps. Spectra S1 Plus is the cheaper of the two at $225.99.

## Side by side

| Spec | Willow Go | Spectra S1 Plus |
| --- | --- | --- |
| US price | $239.99 | $225.99 |
| Brand | Willow | Spectra Baby USA |
| Released | 2022 | — |
| Type | wearable | electric_double |
| Suction levels | 15 | 12 |
| Max suction mmhg | 295 | 270 |
| Rechargeable battery | Yes | Yes |
| Hospital grade | Yes | Yes |
| Closed system | Yes | Yes |
| Weight (oz) | 13.6 | 48 |

## Key differences

- Type: Willow Go wearable vs Spectra S1 Plus electric_double
- Suction levels: Willow Go 15 vs Spectra S1 Plus 12
- Max suction mmhg: Willow Go 295 vs Spectra S1 Plus 270
- Weight (oz): Willow Go 13.6 vs Spectra S1 Plus 48

## What reviewers say

**Willow Go** — Only one whitelisted tester, Reviewed (USA Today), published a hands-on Willow Go review (written and tested by Alexandra Frost); no Wirecutter, Good Housekeeping, or Wired lab test was fetchable. Reviewed calls it a comfortable, easy-to-set-up and easy-to-clean budget wearable, but flags limited mobility, a motor that feels weaker than hospital-grade pumps, and no milk-bag support. No measured benchmarks were reported. (1 sourced review.)

**Spectra S1 Plus** — Two whitelisted, hands-on testers reviewed the Spectra S1 Plus: Reviewed (USA Today) lists it among the pumps its editor personally used, and Good Housekeeping names it Best Overall after Lab and consumer testing. Both reviews are qualitative, so neither published lab-measured suction or output numbers. Both praise its quiet, efficient operation and the built-in rechargeable battery that allows cordless pumping; they split on the roughly 3-pound weight. Non-whitelisted sources (BabyGearLab, Consumer Reports, forums) were not used. (2 sourced reviews.)

## Sources

- Willow Go: https://onewillow.com/products/willow-go-pump-kit (onewillow.com, verified 2026-06-19)
- Spectra S1 Plus: https://www.spectrababyusa.com/products/spectra-s1-plus-premier-rechargeable-double-electric-breast-pump (spectrababyusa.com, verified 2026-06-19)

Canonical: https://frontdeskreview.com/gear/breast-pumps/willow-go-vs-spectra-s1-plus/
Cite: Per The Front Desk Review, Willow Go ($239.99) vs Spectra S1 Plus ($225.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/breast-pumps/willow-go-vs-spectra-s1-plus/
License: CC BY 4.0.