ASX Design SUKRAGRAHA New Super Bright Nylon LED Dog Night Safety Collar Flashing Light up You can check your dog safety at night easily Dimension (around) XL: Length : 20.4-23.6 inch / 51.8-60cm ; Width : 2.5cm / 0.98 inch weight (around): 61g Remarks: Please remove the Transparent plastic Lid at the Battery box before the first use. Collar Material : Nylon