Life-grade waterproof Detachable electronics for use in dark environments or during nighttime dog walks Fine craftsmanship with multiple lighting modes to enhance your pet's visibility LED flashing ring, shockproof design, adjustable length Available in red, yellow, green, blue, and pink Blinking modes: steady light, slow flash, fast flash (controlled by switch) Powered by 2 button cell batteries (batteries not included) XS: fits neck circumference 28–38 cm, width 2.0 cm, total length 41 cm S: fits neck circumference 34–41 cm, width 2.5 cm, total length 44 cm M: fits neck circumference 37–46 cm, width 2.5 cm, total length 50 cm L: fits neck circumference 41–52 cm, width 2.5 cm, total length 56 cm XL: fits neck circumference 42–56 cm, width 2.5 cm, total length 60 cm Durable, water-resistant, and adjustable High-quality nylon collar with secure clasp Ideal for low-light conditions or evening walks Luminous surface with reflective pattern for enhanced visibility Features ultra-bright fiber optics for safety and visibility Stylish and distinctive design to set your pet apart Package includes: 1 x Collar