Wtaps itself is a clothing brand based on military style. The original brand name was double taps, which means middle shooting. Because the pronunciation of double is similar to w, it later became wtaps. Wtvua is the abbreviation of "WTAPS Visual Up Armored" and also the slogan of its brand. But the label of your clothes is wtvua, not wtaps clothes. So WTVUA is not an English word, so don't worry about it.