2020-2021 Borussia Dortmund Warmup Tee (Yellow). Boldly Borussia Dortmund, this pitch-perfect tee is a part of the Official Prematch Collection. With athletic lines and ventilation for comfort during exercise, it features a hidden water reactive graphic that appears when you are working your hardest. Push yourself to the max to reveal your true passion within.Crew neck with set-in sleeve constructionSide seam vents for increased ventilation and freedom of movement during exerciseOfficial Borussia Dortmund crest at left chestPUMA Cat Logo at right chestWater-reactive graphic at front revealing club wording PersonalisationName & Number - Customise your jersey with the name and number of your favourite Borussia Dortmund player or even your own name. We can print name in the same style worn by the players.