This belt (phosphorescent) glows in the dark. It comes with a strong polyester strap with perfect grip, covered with a silicone-like material, tested and proven effective in load tests. The phosphorescent material can emit light only after exposure to light, depending on the duration and intensity of the exposure. Maximum length: 240 cm Adjustable length: 215, 160, 125 cm Water-resistant Easy to clean Sterilizable