Q1: for 1 pair shoes ?
A1: yes, for 1 pair of shoes.
Q2: elastic ? can be stretched ?
A2: yes , elastic and stretched.
Q3: with buckle ? buckle plastic or metal?
A3: yes , with , and it is metal.
Size ahout the no tie shoelaces
length of elastic shoelaces : 100cm or so
length of metal lock : 18mm or so.
How to use elastic shoelaces
it is very esay to use , example :
Colors on elastic shoelaces
Examples on elastic shoelaces
there must be a style for you :