Rubber Cord with steel core gone= gone!

Info

Gone = Gone!
Rubber cord with steel core and stainless steel bayonet closure
Thickness 2 mm, length 45, 2 more pieces and 50 cm, 1 more

Pay attention! these necklaces cannot be exchanged for hygienic reasons.
Determine the correct desired length?
Cut a string to length and check your neck if this is the right length for you.