If you practice often, you probably regularly sacrifice gear to the roller derby gods. Hopefully someone warned you early on that derby is not a cheap pastime. Between all the crap you need (regulation gear, dues, jerseys) and all the crap you “need” (another pair of lift and separate shorts, that warm-up jacket, a jammer star headband), derby will constantly be divorcing you from your dollars. One of my best friends is a black belt in Aikido (yeah, don’t mess with me), and sometimes I’m awed by and envious of the simplicity of what she needs to practice — her gi, hakama and badassery. And if she needed to practice it in a dark alley, only the third thing. Fairly simple. For derby, you…