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Ships USPS. Stamped #10 letter envelope or mailer. Please allow up to 10 working days from shipped date. No tracking in order to pass the savings on to you. With tracking I would have to increase the price ($3.75 more). 

1x Adjustable Silicone Eyewear Retainer Sports Sunglasses Eyeglasses Strap Holder. Color Black. Lenth is 10 3/8 inches. Letter on lenth adjuster (dice) may differ.

Thank you,