The special design features are what makes this sun protection shirt unique. This UV shirt has a collar extension that can be worn up to protect the neck area of those with short hair. You can keep your key or money secure in the front zip pocket. Since the pocket bag is made of mesh, the pocket lies flat and does not add bulk to the shirt. The stretch side panels are designed for ease of movement, and the extended cuffs offer extra sun protection for the backs of your hands. Finally, the lightweight, wicking fabric and covered back mesh vent will help keep you cool on even the hottest day.