Sled kites have little or no frame. Most kites (those mentioned above) have a dihedral that goes up at the sides, but sled kites are higher in the middle. The pressure of the wind holds the kite open, so no frame is required across the kite, and many do not have frames running up and down the kite. They can be folded up very small, so are often sold as 'Pocket Kites'. They are easy to make and fly and do not break if they crash, so they make good starter kites for children.