2XU Women's Aero Tri Singlet Black/ Coral Run Accessories_Hydration Packs Due to its unique optimization

Due to its unique optimization treatment

Includes clips and straps

Trek developed their own bb standard to optimize their frame designs

thus eliminating hot spots and discomfort

2XU Women's Aero Tri Singlet Black/ Coral Run Accessories_Hydration Packs Due to its unique optimizationThe Aero Tri Singlet features industry leading aerodynamics and ventilation technologies for your best performance yet. Product details UNRIVALLED AERODYNAMICS The 3D mesh structure of premium Italian SBR VENT through upper body provides exceptional aerodynamics and is ergonically engineered to fit to your body like a second skin STAY COOL Leveraging a hydrophilic nylon LYCRA fibre matrix, SENSOR MESH panelling provides enhanced moisture and air flow