YYOJ Super-Stretch Wrap-It Storage Straps, 40-in x 2-in (3-Pack) - Elastic

Does the velcro extend the full length of the strap?

What is the actual length of the 18" and what does it super stretch out to??

What is the width of the straps? I see the length of 18" but no mention of width.

Two of each as pictured for a total of 8 straps, or just one of each? Picture and words do not coincide.