Fashion Forms Adjustable Low Back Strap One Size Style 4105 100% Nylon 70% nylon, 30% spandex Country of origin: Imported Care: Hand wash Cold. Line dry. 1-1/4" wide. 30-3/4" long fully extended, adjustable to shorter length with coated metal hardware. 2-hook (2-row, 3-column) coated metal hook-and-eye closure. Hooks are approximately 1/4" apart (since 2-hook bras can vary in space between hooks).