Used only on tartan tracks. Used for competitions. The pins are for tartan tracks. Selling at a low price. Please use them for practice. They were quite a lightweight model at the time. An Asics bag and a pin replacement handle are also included. Black asics spike shoes with Velcro straps for excellent fit. - Brand: asics - Color: Black - Sole Type: Spike sole - Strap Type: Velcro strap Thank you for viewing.