Package contains: Adjustable glasses strap X 2 Anti-slip hooks X 4 Glasses cleaning cloth X 2 Glasses bag X 1 Double protection, to keep your glasses tightly stay on your nose: Adjustable glasses strap and Anti-clip hooks. You also can single use glasses strap and single use anti-slip hooks. All using method won`t let you down. PAWALT glasses strap has waterproof soft black silicone connectors and anti-slip hooks. Will not bring any press to your head and ear. You can enjoy your playing, such as fitness, playing basketball, football, street dance, watersport, even crazy in Disney park...