Features 1. Use non-slip: put on the tail of the glasses, exercise (such as running, swimming, playing, dancing) to prevent the glasses from falling. 2. Vintage and exquisite, compact and lightweight 3. Length about 75cm Manual measurement with error 4. Weight about: 5g 5. Suitable for the crowd: Children who are interested in sports, children who need to use fixed eye glasses, and elderly people who often wear glassesSpecification: Package Weight One Package Weight 0.01kgs / 0.02lb One Package Size 4cm * 4cm * 1cm / 1.57inch * 1.57inch * 0.39inch Qty per Carton 700 Carton Weight 4.80kgs / 10.58lb Carton Size 32cm * 22cm * 20cm / 12.6inch * 8.66inch * 7.87inch Loading Container 20GP: 1893 cartons * 700 pcs = 1325100 pcs 40HQ: 4396 cartons * 700 pcs = 3077200 pcs