2 Pack: Receive two classic Drinking Birds per order - perfect for schools, retailers, party favors, and science fairs.

Size: Each sippy bird stands about 8 inches tall. Simply fill a glass with water, submerge the bird's head, and watch the magic begin.

Perpetual Motion: Experience the wonder of a device that moves indefinitely without external help, using a fascinating thermodynamic cycle.

Fascinating & Educational: A timeless novelty that captivates with its simple yet intriguing mechanism.

Great Gift Idea: Ideal for office workers, science enthusiasts, and anyone who loves unusual desk accessories or enjoys the charm of perpetual motion machines.