Made of durable polyester material with good elasticity. It has excellent properties such as long-term use without deformation, corrosion resistance, heat resistance, and quick drying. The bib holder chain provides fixed and windproof functions that keep the napkin stay in place and prevent it from moving away and falling off. The portable design helps you enjoy meal and workouts without dirt your clothes and affecting your movement. This strap includes two sturdy plastic clips and a spring-loaded plastic buckle. You can easily clamp both sides of the clip onto a napkin and adjust the buckle to the length you need based on your neck and face comfort. Widely used to fasten the napkin around the neck when people of any age on birthdays, weddings, Valentine's Day, and Christmas at home or outside restaurants. Also, it can be used as a hat or cap lanyard to secure in sports or any action, such as sun hats, cowboy hats, baseball caps, flat caps, etc. Material: Polyester Color: Black Chain Size: 320mm x 2mm/12.6" x 0.08"(Fold.L*Dia) Clip Length: 26mm/1.02" 2 Pcs x Napkin Holder Chains