1. INCREASE YOUR SIZE RANGE WITH THIS SIMPLE ITEM: Add more extra room to bras that are too tight and comfort while wearing your bra. for airplane travel as it can give you a relax especially can be used for pregnancy or maternity. Please measure the hook-and-eye spacing and see if these are the right size extenders for your bras: 2-Column Extenders: 0.5", 3- and 4-Column Extenders: 0.75". Also see product image. 2. VARIOUS SIZES AND HIGHLY STRETCHABLE: this set of bra hook straps is available in different sizes, with elastic strap, highly stretchable to 5.2 inches in length, suitable for most people, useful if you are in-between sizes. 4 hook:3.5 inches in length, 3 inches in width. 3 hook: 3.5 in length, 2.3 inches in width. 2 hook:3.8 inches in length, 1.3 inches in width. 3. QUALITY: Made of cotton, stretchable fabric, comfortable to wear, leave no tracks, no pinch, no scratch on your delicate skin. Hooks are made of stainless steel, hard, sturdy and durable, not easy to break. 4. EASY TO USE: Attach the hooks of the extender to your bra hook loops, then use the hooks on your bra to attach to the hook loops of the extender. 5. MULTIPLE GENERAL COLORS OPTIONS AVAILABLE- Set of bra extenders has 4 colors, common layout can match with most bras.