Auto-agrippant Omni-Tape™ de marque VELCRO® 2 en 1 - noir - 25mm x 25m - by-pixcl
Hook and Loop Tape, Double Sided VELCRO® Brand Fasteners
Velcro type strap. Unique in that it can attach to itself anywhere. Has rubber line on it. I have received these on various bicycle bags. : r/whatisthisthing
Amazon.com: VELCRO Brand 0365477 Sew On Snag-Free Tape for Alterations and Hemming | No Ironing or Gluing | Light Duty One-Piece Fabric Fastener | Cut-to-Length Roll, 36 x 3/4 inch, Black