YSM LED Collar Light Waterproof Silicone Dog Pet Cuttable Collar Light Night Safety USB Rechargeable Collar Light Practical design and very bright,convenient to walk your pet at night Collar length is 70cm/27.55",One size fits all.You Can carefully cut the collar to any length to fit your pet 3 Light Modes with One Button Control- Slow flash, Quick flash & Steady Glow Waterproof - good for all conditions.Convenient to recharge with USB cable Ultra Light-Weight,highly visible, 5 Colors for your choice, recommend to use it as safety neck band that your dog wears over their regular collar