"Brand Adult Product" as a negative pressure or vacuum therapy device. It uses the principle of negative pressure or vacuum, making the penis passive congestion, thereby treating erectile impotence. Personally, I think, "Brand Adult Product" It's a big disadvantage is that congestion in the penis, causing the penis while increasing blood flow obstruction, causing the penis congestion. When congestion, capillary dilation because of lack of oxygen, oozing, non-specific inflammation, "Brand Adult Product" likely to cause long-term effect on the penis fibrosis, irreversible pathological impotence, consider carefully before use.