eyewear adjustable sturdy eyeglass chains sport strap/ terra woven cords /sunglass retainer with slip-in silicone end tube spectacle lanyard

this product is for wearing your valuable eyeglass during sport activities such as biking, hiking, playing badminton, to prevent it from falling off. length:38cm, diameter of rope:5cm
-colors available: solid colors - black, brown, green, amy green, blue, dark blue, mixed colors: black and white and black, red, grey and white, blue and white material: sturdy woven climbing rope made of polyester with 100% silicon slider and loops -end silicone loops suitable for most eyeglass temple legs adjustable with silicone slider while doing sports.syi