Quick answer

Choose the Willow Go Splashguard Container Set if you use a Willow Go pump and want reusable 5 oz or 7 oz containers for pumping and milk transfer. Choose Catch-All Milk Cups if your priority is catching let-down or overflow during nursing with a Willow Pump system. They solve different problems, and many parents use both for different parts of the day.

What each container actually does

The Willow Go Splashguard Container Set (2-pack) is built for the Willow Go wearable breast pump. It includes two reusable milk containers for pumping and storage, available in 7 oz and 5 oz sizes. The set is designed for easy transfer, so you can pump, remove, and move milk without juggling multiple vessels.

Catch-All Milk Cups serve a different job: collecting let-down or overflow during nursing. They are compatible with Willow Pump systems and are positioned as an early breastfeeding essential. If you leak or let down on the opposite side while feeding, these cups capture that milk instead of letting it soak into a pad.

Compatibility and capacity: the practical differences

Compatibility is the first filter. The Splashguard Container Set is made for the Willow Go pump. Catch-All Milk Cups are compatible with Willow Pump systems, but the catalog does not specify individual pump models beyond that, so check your specific pump before buying if you are unsure.

Capacity is the second filter. The Splashguard Container Set comes in 5 oz and 7 oz sizes, which lets you match container size to your output per session. Catch-All Milk Cups do not list a capacity in the supplied catalog facts, so treat them as a collection aid for let-down and overflow rather than a primary pumping container.

Spill protection and daily use

The Splashguard Container Set is part of the Willow Go system's spill-management approach. The reusable containers are designed to make pumping and transferring milk simple, which matters when you are pumping away from a sink or moving between rooms.

Catch-All Milk Cups reduce waste in a different way: they capture milk that would otherwise be lost during nursing. If you are building a stash or trying to protect your supply, that captured let-down adds up over a day. Neither product replaces the other, because one is for pumping sessions and the other is for nursing sessions.

Cleaning and maintenance reality

Both options are reusable, so both add to your cleaning rotation. The Splashguard Container Set is designed for easy transfer, which usually means fewer parts to disassemble compared with bag-based pumping. Catch-All Milk Cups are described as easy to use and clean, which matters when you are rinsing them several times a day.

If you already follow a sanitizing routine for your Willow pump parts, add these containers to the same schedule. For step-by-step cleaning guidance, see our article on how to sanitize Willow pump parts without damaging them.

Trade-offs at a glance

  • Pumping vs. nursing: The Splashguard Container Set is made for pumping and milk transfer with the Willow Go. Catch-All Milk Cups are made for catching let-down or overflow during nursing. Pick based on whether you need a pumping container or a nursing collection aid.
  • Capacity certainty vs. flexibility: The Splashguard Container Set lists 5 oz and 7 oz sizes. Catch-All Milk Cups do not list a capacity in the supplied facts. If capacity matters to you, the Splashguard set gives you a clearer choice.
  • System fit: The Splashguard Container Set is specific to the Willow Go pump. Catch-All Milk Cups are compatible with Willow Pump systems. Confirm your pump model before ordering to avoid a mismatch.

Product facts

  • Willow Go® Splashguard Container Set (2-pack): The Willow Go Splashguard Container Set (2-pack) includes two reusable milk containers designed for pumping and milk transfer, compatible with the Willow Go wearable breast pump. If you own a Willow Go, this set gives you a reusable container option instead of relying only on bags.
  • Willow Go® Splashguard Container Set (2-pack): The containers are available in 7 oz and 5 oz sizes. You can choose the size that matches your typical output per session, which reduces overfilling and wasted space.
  • Catch-All Milk Cups: Catch-All Milk Cups are compatible with Willow Pump systems and are designed for capturing let-down or overflow during nursing. These cups help you save milk that would otherwise be lost during breastfeeding sessions.
  • Willow 360® Pump and Container Bundle: The Willow 360 Pump and Container Bundle pairs the Willow 360 pump with containers for a complete setup. If you are starting fresh and want a pump plus container solution in one purchase, this bundle is the more direct path.

Which one fits your routine?

Best for

  • Willow Go users who want reusable 5 oz or 7 oz containers for pumping and milk transfer
  • Parents who want a spill-conscious container option for pumping sessions away from the kitchen

Not for

  • Nursing parents who mainly need to catch let-down or overflow (choose Catch-All Milk Cups)
  • Anyone who needs a container for a pump model other than Willow Go without checking compatibility first