Vest by HIIT, Witness the fitness, Round neck, Dropped armholes, Branded print, Regular fit, No surprises, just a classic cut. Look stylish without breaking a sweat with HIIT's drop of activewear. The label's monochrome palette plays out across a streetwear-inspired range of tops, leggings and sports bras all kitted out with breathable mesh panels and handy zip pockets.