The collar is prone to collapse and curl, and this collar shaper can effectively help you solve this problem. Strong adhesion, not easy to peel off, no glue left after tearing, firm and durable. The triangular shape conforms to the collar design, allowing for free cutting, perfect fit, and invisible aesthetics. The collar is made of polyvinyl chloride material, lightweight, with rounded corners, and will not harm the clothes. Easy to use, just peel it off, press and stick it in place. It can support the collar and prevent deformation of the collar.