MAX & MOLLY MATRIX ULTRA LED SAFETY LIME GREEN. Finally, your dog is visible even in the dark. The Matrix Ultra LED has four different lighting modes: bright, less bright, energy-saving, and flashing. The LEDs are fully waterproof and submersible (IP6), withstanding rain or even a bath in the lake without any issues. The dynamic silicone strap allows for secure attachment to collars, leashes, and belts up to 2.5 cm wide. The Ultra Matrix LED is the perfect little spotlight for your walks in the dark and provides increased visibility in traffic.