For a Guaranteed Leak-Proof seal, twist lid closed until you hear/feel the click and you see the arrow on lid point anywhere within the zone marked on the cup rim.

For cups with spouts, push the valve firmly into both holes, until it can’t be pushed any further, to ensure optimal spill-proof performance and drinkability for child.

For straw cups, close the slider on the top of the cup to store the straw, keep it clean to help ensure spill-proof performance.

Do not use cups with carbonated beverages or pulpy juices. Do not use cups in the microwave.

They should be available in your local supermarkets, drug or discount stores.

They should be available in your local supermarkets, drug or discount stores.

Insulator® spout and straw cup
The inner cup is made of polypropylene. The outer cup is made of kostrate plastic. The lid is made of polypropylene. The straw and valve are silicone.

Lil’ Gripper™ spout and straw cup
The cup is made of clarified polypropylene, the lid is polypropylene, and the straw and valve are silicone. 

The First Sipster® cup
The cup is made of clarified polypropylene and the lid is polypropylene with TPE (thermal plastic elasticizer) spout and handles.

The Sipster® cup and lid are polyethylene.

Step 1: Clean the cup before first use and immediately after each use.  Cleaning instructions: The cup, lid, and valve (or straw) are top rack dishwasher safe, away from the heat source, or are hand washable.  Remove the valve from cups with spouts, or remove both straw pieces and open the valve connected to the short straw, from the lid before washing. For cups with spouts, store the valve under the lid when washing parts in the dishwasher. Avoid use of abrasive cleaners.

Step 2: For cups with spouts, after cleaning, pinch both ends of valve to open slits. 1). Then insert the valve firmly until it can’t be pushed any further. 2). For cups with straws, after cleaning, pinch attached valve to open slit 3) before reinserting it back into the end of the short straw. Then reinsert short straw though bottom of lid and attach long straw onto end of valve.

Step 3: After filling the cup, screw lid on tightly by twisting until the arrows line up and you hear/feel the click.

No, we don’t recommend microwaving since liquid inside can heat unevenly or over heat and burn baby’s mouth even if outside of cup feels cool.