Original Whoop 4.0 watch strap. The strap is new and unused, "only the box was opened". It was purchased from Whoop company, the invoice is available. Navy blue color, blue color. Reason for selling: It does not match the strap I have. Location: Al-Qassim / Al-Bukayriyah. Only serious buyers should bid. Delivery in Al-Qassim is hand-to-hand. Shipping outside Al-Qassim is available and at the buyer's expense. Note: This is only the strap, without the device.