BOSS Parkour L Runn Trainers in Black. BOSS is the brand for anyone looking for the best in athleisure, and these Parkour trainers do not fall short. Whilst being fashion-savvy with a hybrid mesh and leather upper, a lace-up rubber cage and memory foam insole provide the support and comfort of a sports trainer. Gold trims line the eyestay, toe cap and heel, while brand embossing features on the collar, tongue, and arch wraps, giving these trainers a truly luxurious finish.