One collar offers up to 7 months of protection;Water Resistant;Reflective Collar reflects direct light up to 450 ft.;White Collar;Read entire label before use;A dual action waterproof collar which contains ingredients that effectively kills fleas ticks and flea eggs for 7 months;This collar also utilizes 3M&#8482Scotchlite &#8482Reflective Material which reflects direct light from up to 450 ft. away;Gives the pet and owner an added dimension of night time safety;This product is best used on kittens of 12 weeks of age or older.