MR.Jiang Pets Dogs Night Strip Collar Flash Light Up LED Collars Safety Waterproof Adjustable Stripe It is also an excellent way to ensure both you and your pet's safety. Material:nylon. Color:red,blue,yellow,green,orange,white,pink,Multi Color. light modes:Continuous on,Slow flashing,Fast flashing(rainbow color is continuous on). With buckle, easy and convenient to wear and remove.