Whether you're looking for an edge in your next tri or hoping to get more out of your cross-training workouts, the 2XU Compression Sleeveless Top is a versatile way to add upper body compression into your routine. Designed to help improve posture and improve muscle support and circulation around your core, chest, and shoulders, the top fits easily under a race jersey or can be worn on its own on training days. It's constructed out of moisture-wicking, antimicrobial Invista Lycra, which allows it to achieve a compressive fit that won't stretch over time, while Powermesh panels add some welcome flexibility and keep air moving freely as you sweat.