Active tri singlet with additional mesh for increased ventilation the 2xu active tri singlet is all about comfort support and breathability needed for the entry level triathlete sbr skin lite and sbr skin fabric with high fil mesh the complilation of two high lament nylon fabrics made for triathlon give the user quick drying lightweight moisture wicking fabrics with aerated mesh for increased ventilation flatlock stitching 12 zip front amp up the comfort and never worry about chang 3 re