WJA Sport Eyewear Retainer, 12 Colorful Sunglass Straps Silicone Adjustable Sungl Elastic Holder for Outdoor

12 Pieces Silicone Eyewear Retainer Gl Straps Eyeglass Cord Holder Antislip ElasticSilicone material is safe and soft for daily use. It will never be drenched by sweat. Elastic string allows you to stretch it easily and take on or off quickly. Adjustable cube toggle on the cord ensures that straps will not fall off easily and comfortable for all head sizes and shapes. It effectively protects your gl from falling off or slipping down in exercises like surfing, skiing, skating, shooting, cycling, running, horse riding, military, daily use, etc. Suitable for thin frames up to 0. 3 (8mmthick and can be easily adjusted according to your preference. It won't soak up sweat or get dirty or stains and easy to wipe and clean. 12 pieces different colors for choosing to match your gl frame perfectly. Portable and stylish for outdoor and indoor use. Specifications Length: 20. 9 inches / 53cm Thickness: 0. 08 inches / 0. 2cm String Head Diameter: 0. 3 inches / 0. 8cm String Diameter: 0. 16 inches / 0.