Material:Soft PVC and alloy spike Collar width: 11.8"(30cm) extension chain length : 6"(15cm) The choker can be made to a custom size if you would prefer, please just leave me a note at the checkout with your neck measurement. This choker is made to order and handcrafted, so it will take me about 2~3 working days to make and dispatch.For more information on shipping take a look at my 'About' section on my shop page or my FAQ. Thank you and if you have any other questions please don't hesitate to contact me.