These are Black 3-hole Croco Rally Bands for Pebble Smartwatch! Crafted from genuine leather for a comfortable set of watch bands. Each pair comes with built-in quick release pins for a fast attachment process. Length is 7.677″ ( 120mm/75mm ) with a thickness of 4mm. Styled as Rally racing watch bands with a 3-hole design adding to the uniqueness of the bands. Several hardware options are available including authentic stainless steel!