360 0 RIM DRINKING - Tip and sip from anywhere along the rim.
TRANSPARENT MEMBRANE lets the child see the liquid approaching the rim without spilling.
SPILL-RESISTANT DESIGN - Lip pressure on rim allows liquid to flow only while sipping.
OPEN-CUP TRAINING - Membrane can be easily removed to turn the 3600 Rim Trainer into a true big-kid cup.
SNAP-ON LID keeps spout clean when not in use.