There is provided shipping container systems for bottles including an outer container and a two-part bottle retention insert system. The outer container receives the two-part retention system, including a tray including a pair of neck portion retention flaps and a pair of body portion retention flaps, wherein the neck portion and the body portion correspond to the neck and body portions of a bottle, and an insert, wherein the insert complements the tray, the insert including a shoulder tray for engaging with a bottle installed in the system, the shoulder tray for applying a retention force on the bottle to secure the bottle against a bottom of the tray, wherein the shoulder tray engages a cushion gap formed by the neck portion retention flaps and the body portion retention flaps resulting in a cushioning of the bottle in a length of the system.