Namsan LED Light Flashing Dog Puppy Pet Safety Collar Nylon Adjustable Width 2.5CM (Red,Yellow,Blue,Green,Orange,Pink)&(Small,Medium,Large,Extra-Large) Nylon collar, 100% quality guaranteet.size map at the left picture column, Pls confirm it before you place a order. The Item have three modes: 1.Steady On 2.fast flash 3.normal flash You get 60 hours of steady light, or over 100 hours of flashing light with each collar Width 2.5cm (1 Inch),Every one have 8cm flexible range. Color: Red/Yellow/Orange/Blue/Green/Pink The battery can be replaced, The Collars can be cleaned.