Designer accessories are items that are used to enhance a piece of attire and carry the insignia or name of a well known designer. These accessories will often be very fashion-oriented and trendy.
About Zipper:
A zipper, sometimes called a 'slide fastener' is a device consisting of two toothed tracks or spiral metal or plastic coils, each bordering one of two edges to be joined, and a piece that either interlocks or separates them when pulled.