COCHIC For Students Collar Extenders Made in Canada COCHIC for Students is a school uniform accessory that extents a students shirt or blouse collar. One size: adds up to 3/4 inch extension, no sewing, hidden comfort. Use for collar extender or for sleeve extender. Metal free Design to prevent pinching and damage to your shirt. Increased Comfort and extend the life of your garments and school uniforms. Unisex for Boys and Girls. Metal free Design to prevent pinching to young skin and damage to your shirt. Each pack consists of 3 COCHIC accessories in an attractive gift box. Great for Band Uniforms too!