Following the 〈XT-6 "STARS COLLIDE"〉, which realized the world's first collaboration as a sneaker boutique, 〈XT-4 OG GTX "STARS COLLIDE 2"〉 has been produced as the world's first collaboration model of 〈XT-4 OG GTX〉. This model is based on the concept of "celestial collision" from "STARS COLLIDE," which was given as a nickname. The design incorporates the moment when stardust scattered in space emits light, with a star pattern and reflector material placed throughout the upper. The gimmick that changes the appearance depending on how the light hits creates the "celestial collision." In addition, the star pattern is an iconic design that has been used in various collaboration sneakers since the early days of atmos, and it is also an important key motif that connects the brand's history and future, which is included in the design story. The base model, 〈XT-4 OG GTX〉, is a high-performance model that inherits Salomon's trail running specifications. It combines Salomon's renowned functionality, such as waterproof and breathable performance with a GORE-TEX membrane, a Contagrip outsole with excellent grip, and ACS (Agile Chassis System) for stability, providing a comfortable fit both in the city and outdoors. The color scheme is based on navy, which represents the universe, with metallic silver used as an accent color. This is a unique pair that fully incorporates the atmos style, which has elevated trail DNA to the street.