ZIP FASTENER

A zip fastener may include a first slider disposed to slide lengthwise along a pair of stringers, and which includes one of a male part and a complementary female part. The other of the male part and the female part is formed on either a member, which may be a fixture fixed to the stringers, or a second slider. The male coupling part includes a neck adjacent an enlarged head, and the female coupling part includes a transverse slot with broad and narrow sections. In a two-handed operation, the male and female parts are mutually engaged to connect the first slider and the member by relative transverse movement, to pass the male part through a mouth of the transverse slot. When latched is closed in this way, axial separation of the first slider from the member is precluded.