Custom Pet Collar: *Adjustment Size: width 1″ (2.5 cm) ; Fit neck size: 14″ to 21″ (36 cm – 54 cm)(Custom length: the width 1 inch and you could leave the custom length in personalized information. Such as: 25 inch) *Collar colors: Black, Pink, Blue, Purple, Red, Green, yellow and light gold *18 Thread colors available : Black, White, Aqua, Red, Pink, Purple, Green, Gold, Blue, Lilac, Khaki, Cream, Navy, Gray, Brown, Yellow, Orange and Royal Blue * Shipment: Ship from California by USPS package with tracking number (Made in USA)