Help

The best way to reach us is via email: service@thyseed.com

*Please include your order ID and a detailed description of your inquiry.

Products

The bottle is made of PPSU/Glass/Silicone, and the nipple is made of food-grade silicone. All materials are BPA-free, safe, and non-toxic.

It is recommended to replace the PPSU bottle every 6-8 months and the silicone nipple every 2-3 months. Replace immediately if wear, damage, or discoloration occurs.

PPSU is lightweight, drop-resistant, heat-resistant, and easy to clean; silicone is soft, safe, and bite-resistant. Together, they offer both durability and a natural feeding experience.

Please choose the flow rate according to your baby's age: 

0+ (0-1 month) 

1+ (1-2 months) 

2+ (2-3 months)

3+ (3-7 months)

0-3 (0-3 months)

3-7 (3-7 months)

7-10 (7-10 months)

10+ (above 10 months)

It can be sterilized by boiling, steam sterilizing, or UV sterilizing.Do not use a microwave for sterilization, as it may damage the product.

Try these ways:
Imitate temperature: Warm the nipple with warm water to bring it closer to the temperature of the mother's breast.

Familiarize with scent: Put a few drops of breast milk on the nipple before feeding, so the baby can smell a familiar scent.

Skin-to-skin contact: Keep the baby close to the feeder’s chest during bottle feeding to maintain skin contact.

This is usually caused by negative pressure inside the bottle.Release the pressure by loosening the cap before feeding (ventilation)

First, check if the vent valve is properly installed; then check if the valve is damaged.

Do not use sharp objects to clean the vent valve.

No.

No.

PPSU is a high-end plastic bottle material with a light amber color.

Key differences:

More heat-resistant (up to nearly 200°C), retains shape after repeated sterilization.

More durable: Impact-resistant, scratch-resistant, less prone to aging, longer lifespan.

More stable: Resists odor retention and milk residue buildup.

In short: Compared to common PP, it’s safer and more durable; compared to PES, it’s more scratch-resistant — making PPSU the top choice among plastic bottles, though it’s also the most expensive.

Returns

Please view our full policy at: Returns & Exchange

Shipping

You can track your parcel on the third-party website 17track. 

*Note: This is a third-party service for your convenience. Logistics updates, especially from customs, may sometimes be delayed.

Please check our shipping destinations list at Shipping & Delivery

United States: Shipped from US warehouse. 3-5 business days.

Other Countries:Shipped from China warehouse. 7-12 business days.

Please allow an additional 1-2 business daysfor order processing.

More details:Shipping & Delivery

Contact us at: service@thyseed.com

*Please include your order ID and a detailed description of the issue.