The qdc tri vest is ideal for warm weather conditions'. '.strtoupper('t')he thermodynamic properties of the vest will keep you cool when you need it most'. '.strtoupper('w')ith mesh side panels and coldblack technology the vest will allow your body heat to escape be cool to the touch and will actually repel the suns rays'. '.strtoupper('t')he vest has been constructed to avoid chafing and skin irritation even in the most vulnerable areas and will even help to protect your skin from the suns ultraviolet rays'. '.strtoupper('e')ven in cooler weather conditions keeping cool when competing is key to reducing fatigue and energy expenditure and in this sense the qdc tri vest is a fantastic investment'. '.strtoupper('l')ightweight pro level race kit selectively bonded seam construction eliminates chafing high wicking main body fabric with coldblackacircldquodagger technology upf 50 protection and mesh side panels manage body temperature bonded flush integrated rear pocket construction polyester 85% elastane 15%