Feature: -- Build-in D-ring, Tensile force.  -- With locked buckle.  -- With Slip buckle, adjust collar into comfortable size for your pets.  -- Sewing two reflective ribbons.     Three Flash Mode: -- First Click_Steady Light.  -- Second Click_Quick Flash.  -- Third Click_Slow Flash.     Specifications: Product Name: LED Artwork Rope Embroidery Light Pet Collar.  Material: Polyester Ribbon, Bright Reflective Strip, Super Bright LED Lights, ABS.     Size: -- S/M: 35-54 cm x2.5 cm / 13.7-21.2x1 inch.  -- L/XL: 45-70 cm x2.5 cm / 17.7-27.5x1 inch.  Color: Red, Blue, Green, Pink, Orange, Yellow, White.  Weight: 88g.     Package Include: 1 x Collar.  1 x USB Cable.  1 x Sealed Bag.     Note: 1. Please allow 0.5-1 inch difference due to manual measurement. (1inch=2.54cm).  2. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding