Men's De SotoA(R) Riviera SDS Tri Top - Full Zip :: We made the arm holes larger for less friction and better aero dynamic fit. This is a skin tight sleeveless triathlon top that is easy to put on in T1 (transition from swim to bike). It is also great for cyclists looking for a sleeveless option for hot days. Skin Cooler Octovent(TM) in front and Skin Cooler SDS(TM) on side panels, and back. 3 back pockets, full-front YKKA(R) zipper, contrast flat stitch.