The CYBEX Gazelle S & Aton 2 Travel System delivers the ultimate in flexibility and safety.Adapting to the changing needs of your family, the Gazelle S can easily convert from a single to a double stroller without additional adapters. Designed to support 20+ different configurations for an infant and child in forward facing and parent facing modes, the Gazelle S provides flexibility for your growing family. The Aton 2 is one of the lightest infant car seats on the market, offering easy car transfer and carrying. Safety features including side impact protection and a load leg base provide outstanding protection and peace of mind.