Keen is available in two styles, Sporty and Stylish.  The Sporty Keen is offered in black or teal silicone, while the Stylish Keen is offered with a brown genuine full grain leather strap.  We also offer Sporty straps in white, pink, red, and navy.  

The Sporty version is available in two sizes, S/M and M/L.  The Stylish version is available in one size, which will fit most people.  You may find sizing information here.