Velofel Two of the most dangerous devices are penis pumps and weights. Penis pumps? How can they be dangerous? They are dangerous because the vacuum, or suction, formed inside a plastic cylinder can cause blisters to your penis. Worse yet, certain veins can be damaged during prolonged use. The practise of hanging weights from your penis also damage veins and capillaries, possibly causing permanent impotence. There is no sense having a big penis that you can only look at! https://supplementscare.co.za/velofel-south-africa/