Moncler Bubble Trainers in White. The Bubble Sneaker from Moncler is an authentic must-have. Combining the comfort and fit of athletic shoes with the brands signature fashionable details including a sturdy, solid sole articulated in the form of bubbles. These individual islands are arranged to follow the shape of the foot to aid ultimate support. The upside of the shoe boasts a knitted sock form featuring panels for an iconic finish to this unforgettable design.