Quiz time: what's the easiest, most efficient and effective way to work out like you did when you were a kid? That's right - jumping rope! Small enough to stash in any bag, bang out some high-intensity intervals wherever you go with this classic piece of fitness gear that works wonders for just about anyone. We love this chic, grown-up take on the jump rope by West Elm and Brooklyn-based gym Fitness Guru, made with fine leather and wooden handles.