"Cupless latex bra with with harness choker & interchangeable sized rings on the choker (you will need a screw driver if you wish to changed the size) (Choker is compatible with our cupped bras too & can be purchased on its own just select ‘choker’ in the drop down box) Choker can also be made with buckles instead of sliders. Sizing is relavent to your underbust measurement and not your bra strap size"