During the whole transportation, the suction pads were pressed and they may become hard because of the temperature variation.If the suction pads did not stick firmly, put it into the HOT water up to 5 minutes to soften the suction pads and make them back into shape.

The suction cup can only attach itself to the flat and smooth surface such as glass, ceramic, polishing tiles etc.
The hoop and backboard fastens to any flat surface with 2 suction pads, made from extra strong durable material to ensure that you can enjoy hours of slam dunking fun.
