***** Due to size / width of chip shells, fit of necklace will be tighter. We suggest ordering a size up of desired length. Each necklace is handmade and inspected to ensure the highest quality for our customers. Great as a gift! This is the perfect necklace to wear to the beach or if you just want to add that surfer touch to your outfit. Lock unscrews by twisting counterclockwise. Returns: We believe in providing excellent customer service. 100% satisfaction guaranteed. In any event, if you feel that you are not satisfied with your purchase then feel free to contact us.