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which are transparent and are commonly used in the packaging of fragile content. The "bubbles" are uniformly spaced with the bubbles being filled with air to provide cushioning. The shape of the bubbles is a hemisphere, and www.hreplica.com sheets that have bubbles on both sides are in fact sheets that have been joined back to back. Commonly used for protecting devices during packaging or using it as an internal cushion in envelopes.These sizes do not indicate the www.hreplica.com/rolex-c-2.html diameter of the sphere. In fact, they indicate the height of the sphere as this is the factor that determines the extent of cushion that would be provided to the contents. The rolls are perforated during manufacturing at every 12" and the common width values for the rolls are 12" and 24".This is an important aspect of the packaging design process