First Timer User order only one to start! If you are already using the Strap-Mate Classic, and just need a wider end clasp - the Premier 42 will work fine. The range will fit between 34 to 42 maybe 44 depending on your structure. The clasps are metal nylon-coated: color White. The strap length will comfortably fit those who wear size up to 42. Designed to attach to bra straps up to an inch wide.