Product description Material: nylon Color: black, pink, orange S: width 2.5 cm, short 35 cm, length 43 cm, telescopic range 8 cm M: width 2 .5cm, short 40cm, length 48cm, telescopic range 8cm. L: width 2.5cm, short 45cm, length 52cm, telescopic range 8cm br/>1.Dog Light Up Collar with LED LightDog light up collar is made of durable nylon and LED light, easy to see and protect dogs in the dark environment. This Led collar can provide visibility up to 500 meters. This Led Collar is very necessary for the dogs or cats. 2.Lighting Collar with 3 LED ModesEasy to set by pressing the button and freely switch between the three modes: Fast Flashing, Slow Flashing, Steady Lighting and Turning Off . 3.USB Rechargeable Dog Collar LuminousEquipped with a 250mAh rechargeable battery, it can be connected to other devices such as tablets and phone chargers to charge. It can last more than 6 hours to constantly blink on a single charge. No need to replace batteries and no extra cost. 4.Luminous Dog Collar with Adjustable SizeEasy to wear with a quick release buckle and the length is adjustable. Please measure your dog's neck circumference with a soft tape measure to choose the right size. Always allow your dog enough air to breathe. 5.Durable & Waterproof Dog CollarLightweight and strong nylon strap, extremely durable. The LED lighting pet collar is water-resistant and mildew-resistant. Note: Please close the rubber plug after charging, otherwise it is not waterproof.