Unisex and one size fits most.Unless you have really huge arms, these should fit comfortably because they are stretchable. Looks real & seamless; easy slip on & off.Stretchable fabric material (92% nylon & 8% spandex). These slip on tattoos slip on very comfortably and look pretty darn real. Included are our most popular designs such as tribal, skull, dragons, tigers, figures, and etc.