HIGH QUALITY MATERIAL:Reflective collars are made of PP and polypropylene fiber, they are comfortable to wear, durable and strong in use.ADJUSTABLE INDOOR OUT DOOR :These adjustable safety can be adjusted From 19cm - 32cm/7.4-12.5 inch, 0.4 -inch(1 cm) in width . Suitable for all , You needn't worry that what if your gets fatty or slim, They can be used for a wide range of weight.12 Color: Each set contain 12 quick release of 12 different color, they are red, red, pink, yellow, fluorescent green, grass green, light green, royal blue, blue, purple, black, orange. You can the color according to your mood.SAFETY REFLECTIVE STRAP: In order to let you find your baby at night in the dark, each has a reflective strap which can be seen in the dark. No worry that they may lost and also makes your in the night. AND SAFETY RELEASE BUCKLE:Apart from the reflective strap, there is also a on each of the breakaway , it can avoid situations where there is no light at night, you can still find . - safety release buckle can let your or open the buckle.Material:PP and polypropyleneColor: Multicolor: 12 pcLength: Adjustable 19cm - 32cmWidth:1cmPackage Contents:12 Pcs * Reflective Collars ( red, red, pink, yellow, fluorescent green, grass green, light green, royal blue, blue, purple, black, orange)Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.