Breast-like Transition Sippy Cup | 10oz/300ml
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Y-flow spout prevents choking with gentle, nipple-like sips—helping babies transition from bottle to sippy cup.
- Anti-Choke Dual Pathways: Divided spout channels disperse liquid flow, preventing sudden streams to the throat while maintaining comfortable hydration pace.
- Breast-like Transition Spout: Softness liquid silicone molds to baby's lips，easing bottle-to-sippy-cup switch while protecting delicate gums and emerging teeth.
- Reliable Leakproof Seal: Silicone valve responds only to intentional sucking.Stays dry even when tossed around. Confidently carry in diaper bags without spills.
- Ergonomic Growth Companion: Angled handles promote proper sipping posture, supporting developmental milestones from baby bottle to sippy cup transitions.
- Temperature-Tough Construction: Premium PPSU material withstands repeated sterilization (356°F/180°C) while maintaining structural integrity, BPA/BPS-free for ultimate safety.
- Freedom to Sip Anywhere: Internal straw adapts to cup angles while air vents maintain steady flow. Toddlers drink comfortably whether sitting or crawling.
Technical Details
- Age：7+ Months
- Material Composition：PPSU、Liquid silicone
- Material free：BPA-free
- Care instructions ：Safe in microwave, boiling water, dishwashers and sterilizers
- Recommended Uses For Product：Drinking water, drinking milk, drinking liquids
- Usage Scenarios: Home, travel
- Item Weight：6.4 ounces
- Package Dimensions：3.2 x 4.9 x 6.8 inches
FREE STANDARD SHIPPING will be provided on orders over $59 after discount for most of countries.
Total time (delivered time) = Processing time + Shipping time
The processing time is normally 1-2 business days.
For United States：
| Order Value After Discount | Shipping Costs |
Shipping Time |
| $0 - $39 | $7.99 | 3-5 Business Days |
| Over $39 | Free | 3-5 Business Days |
For All Other Countries：
| Order Value After Discount | Shipping Costs |
Shipping Time |
| $0 - $39 | $7.99 | 7-12 Business Days |
| Over $39 | Free | 7-12 Business Days |
Tips: Shipping time may vary due to unexpected factors, such as bad weather, public holidays, covid or other disease policies, etc. We appreciate your kind understanding for any possible inconvenience.
Track Your Order:
You’ll receive a tracking link via email once shipped.
We offer a 30-days-money-back guarantee. If you are not fully happy with the goods you have received, you can return them to us within 30 days after receiving your order.
Tips：Returned items must be in unused condition with the original packaging. We do not accept returned items that are worn, damaged, washed or altered in any way.
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Customer Reviews
The only transitioning bottle that works
I was blown away that my 7-month-old figured it out on the first day. I’ve heard babies can resist sippy cups but not this one. Plus, the 10oz size is perfect for growing babies. Love the straw and vent combo—no choking, no leaks.
This cup is built to last! Our little girl drinks from it every day. The design is very ergonomic—even the handles help her hold it at just the right angle. Excellent product from a brand we now trust.
My neighbor swore by Thyseed so I gave it a shot. Super happy I did. My baby picked it up quickly, and I love how secure the lid is. It doesn’t leak in the bag, which is a total win. Definitely recommending this to other mom friends now.
I was skeptical at first, but wow—this sippy cup is AMAZING. My 8-month-old took to it on the first try. The soft, breast-like spout really made the transition from bottle smooth. You can tell it’s made from quality materials. It’s leakproof, sturdy, and just feels premium. I’ll definitely be checking out other Thyseed products. Highly recommended!
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High Quality & SafetySafe materials and craftsmanship
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Innovations140+ independent patents
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30-Day ReturnHassle free & risk free
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Free Shipping*On orders over $59
