Car Seats For Babies The binding to the dimensions are described by the system design. Correctly selected devices are allowed in the event of a collision or blocking of transportation, to reduce the risk of injury to children by limiting the mobility of the body. How to install Since the design is very simple, there should be no difficulties in using the device. In the expanded form, it is a trapezoidal overlay with buttons. The button allows the adapter to be resized to fit the child's size . The device is reinforced by three ordinary belt buttons. An extra strap covers the baby's hips. The structure is made of soft cloth, so there is no inconvenience during use. But in the adapter, it must be taken into account that this is not possible. Clip to two children; Fix the child on the arm of an adult. Fix children that do not match the size of the DDU. How much? FEST devices are manufactured by Kostroma Enterprises of the same name in Russia.