COMFORT ＆ BREATHE EASY: Those neck extenders are can made your shirts more comfortable to wear and save money from replacing too tight neck shirts, While your weight fluctuates a bit. | EASY TO USE: Simply attach stretch collar extenders to the existing button on the shirts gives you quick extra space, it's perfect to use with tie. | PREMIUM ＆ HIGH-QUALITY :These button are made of environmental protection plating and ultra-durable zinc alloy，the top quality can help you reuse it | EASY TO MATCH: There are 3 colors to match with different clothes, Black, white, and silver to choose from.It's easy to match your shirts skirt or jeans. | PREMIUM BUTTONS: The size of the button Just 10mm (3/8”) in diameter, it‘s a 12-pack collar extenders. you will receive 4pcs white, 4pcs black and 4pcs silver.