Lid Attachment
Make sure the lid is perfectly aligned with the screw thread. For optimal seal twist until indicators on lid and tumbler are aligned.
Condensation
My First Tervis™ sippy cup is double-wall insulated and will prevent condensation from forming under most conditions. However, on very humid days you may experience a small amount of condensation.
Hot Liquids
My First Tervis™ sippy cup can hold hot liquids, but we do not recommend microwaving liquid as it could burn your child. We recommend testing liquid temperature before giving to child. If you do warm liquids with a microwave, the My First Tervis™ sippy cup lid must be removed for safety.
Cold Liquids
You can refrigerate the My First Tervis™ sippy cup.
NOTE: We do not recommend using ice in My First Tervis™ sippy cup.
Carbonated and Pulpy Beverages
Carbonated beverages can generate pressure inside the My First Tervis™ sippy cup and may cause it to leak. Our sippy cup is not intended for carbonated or pulpy beverages. These types of beverages may impede performance of the lid valve. The My First Tervis™ sippy cup is intended for non-carbonated drinks such as water, milk and pulp-free juice.
Dishwasher & Cleaning
The My First Tervis™ sippy cup and lid are dishwasher safe, top rack only. There is no need to remove internal o-ring (silicone ring on lid) for normal cleaning.
Valve must be removed from lid for proper dishwasher cleaning. A loop on the valve allows you to attach it to a lid handle to help prevent the valve from being lost or damaged during cleaning.
Removal & Reinsertion of Valve
To remove the valve, unscrew lid from My First Tervis™ sippy cup and pull out valve.
To insert valve, press firmly with finger until the valve is completely seated in top and bottom slots.
Removal & Reinsertion of O-Ring (not required for everyday cleaning)
To remove the o-ring, unscrew lid from My First Tervis™ sippy cup. Place the lid in one hand and with your other hand, pinch the o-ring between your finger and thumb and pull out. Please use care not to over stretch o-ring.
To insert the o-ring, press firmly with finger until the o-ring is completely seated in groove.
