Thanks to its innovative design, the Bugaboo Frog is functional and easy to use. This modular infant-to-toddler travel system, with its surprising functions and handy features, allows parents with young children more freedom of movement. The Bugaboo Frog has a unique flowing suspension, which ensures that a child (from 0 to 40 lbs.) can quietly and safely lie down or sit up, however uneven the surface�in the city, on rough terrain or on the beach.