• Size M --- Neck:15.75-19.69 inches --- Recommended about 33.09-55.11 lb dog to use
• Size L --- Neck:19.69-23.62 inches --- Recommended about 55.11-88.18 lb dog to use

• 【HIGH VISIBILITY IN THE DARK】 With high brightness LED, this collar can be easily seen in the night. Reflective strings with neoprene-padded handle improve visibility in the dark.
• 【SOLAR/USB CHARGING】 With a built-in solar panel and battery, it can be charged by solar energy or through an USB cable. You don't need to take it down to recharge or replace the battery.
• 【HIGH QUALITY】 This LED Leash is made of high-quality nylon with double sewing. It's not only lightweight and heavy duty as well.
• 【TWO LIGHT MODES】 Two lighting modes: steady glow and flash. Press a button to switch from different modes.
• 【LONG LAST TIME】 Up To 16 hours of lighting with 8 hours solar charging or 2 hours USB charging.

Shipping Weight: 4.2 ounces