Not only would the condom block sperm, it could time-release a potent mix of anti-HIV drugs and hormonal contraceptives.

Researchers at the University of Washington (UW) developed the condom from tiny microfibres through a method called ''electrospinning'', the Daily Mail reported.

Sex and relationships, dissolving condom

The cloth-like fibres can be woven from medicine into extremely thin ''webs''.

They are then designed to dissolve after use, either within minutes or over several days.

One of the fabrics dissolves within minutes, offering users immediate protection, while another fabric dissolves gradually over a few days, providing an alternative to the birth-control pill, to provide contraception and protect against HIV.