Ships from Hongkong.High quality silicone anti-slip holder for the eyeglasses, ear hook. Super soft and light, comfortable and safe. Secure your glasses and sunglasses during use . Easy to use. Suitable for sports & activities.The type of ear hook to choose is not based on personal preference but rather your particular eyeglass profile (namely the unique size of your temple bend and temple tips and their relationship to one another).Eyeglass leg hook help prevent glasses from slipping, when sweating or working out, Great for the boat, gym, pool, beach, and other activities where losing glasses is a concern. Durable and safe, and they fit most glasses. High-quality soft silicone material, comfortable to wear and non-slip. Package: 3 pair black medium size in package. Small size:21*12mm,item hole size :2*3mm(Very flexible); Medium size:15*40mm,item hole size:6*2.5mm; Large size:9*45mm,item hole size:6*2mm. Fits almost any pair of eyeglasses, reading glasses, or sunglasses.Reduces slippage and prevents loosing glasses from face. Secure your glasses and sunglasses during use.Easy to use.Suitable for sports & activities.