Moonkie 4 oz Silicone Baby Sippy Cups, 3-Stage Training Cups, 2-Pack
Product description
Each cup holds 4 oz and is made from food-grade silicone. The two-cup set is designed for infants and toddlers learning to drink independently.
A three-stage design changes between a spout cup, a straw cup, and an open cup. That gives caregivers one format for introducing different ways of drinking as a child’s skills develop.

The product description says the cups have a double-seal lid and valves in the spout and straw. Buyer feedback is mixed on leak resistance and lid security, so those claims should not be read as a guarantee against spills.
Fit and sizing



At 4 oz per cup, this set is sized for smaller servings rather than a large drink to carry through the day. The product description presents the cups for little hands and early drinking practice. Buyers also mention using them for small amounts of water or milk and appreciate the size for infants learning to use a cup.
The three drinking options are the main reason to choose this set over a single-purpose training cup. A caregiver can introduce the spout, straw, or open-cup setup without switching to a different cup style. It’s a great fit if you want a small-capacity option for practicing those transitions at home. Better avoided if you need a lid that buyers consistently report stays shut when dropped, feedback on lid stability varies.

Benefits
The silicone spout and straw are described as soft, and the material is stated to be free of BPA, PVC, phthalates, and heavy metals. The straw and spout each have a built-in valve, while the lid uses a double-seal design. These are product claims about the construction, not a promise that spills cannot happen in every situation.



Buyer comments often describe the cup as useful for early practice and easy to clean. Some mention that a small brush is included for cleaning the straw and spout, but the listed product details do not confirm that accessory for every set. Reports about leaks and the lid differ: some buyers say the cups stay closed, while others describe minor leaking or a lid that comes off. That mixed feedback matters if the cup will be carried in a bag or handled roughly.
For a practical use case, the smaller capacity and choice of drinking styles suit supervised practice with water or milk. Compared with a basic cup that offers only one drinking method, the three-stage format provides more ways to practice. A more demanding need, such as dependable spill containment during transport, is less clearly supported by the available feedback.

Tech specs
- Type: Three-stage baby training cup
- Capacity: 4 oz per cup
- Format: 2-pack
- Material: Food-grade silicone
- Drinking options: Spout, straw, and open cup
- What’s included: Two cups



What to clarify
How many cups are in the set? The product name identifies a two-pack, with each cup holding 4 oz.
Can it be used in more than one way? The design is described as convertible between a spout cup, a straw cup, and an open cup.
Is it completely spillproof? The product description highlights a double-seal lid and valves, but buyer experiences with leaks and lid retention are mixed. It is safer to treat spill resistance as variable rather than guaranteed.
Final verdict
Choose the Moonkie set if a small 4 oz capacity and several drinking configurations are more useful than sticking with one fixed cup style. The silicone construction and format are aimed at early practice, while mixed reports about leakage and lid stability make it a less certain choice when reliable spill containment is the priority.
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