The PRO 2 Aero Calf Guards are designed specifically for triathlon and long-course racing, upgrading traditional striped aero fabric with a more pronounced 3D aerodynamic rib structure.
Your lower legs remain directly exposed to airflow throughout the bike leg. The PRO 2 transforms this area into a more aerodynamically optimised surface, using pronounced longitudinal ribs designed to manipulate airflow around the calf and help manage flow separation.
Aero calf guards are one of the simplest marginal gains available to a triathlete.
Published wind-tunnel testing of aero calf sleeves has demonstrated potential savings of over 2 minutes across a 180 km IRONMAN bike leg.
Individual results will vary depending on rider, calf shape, speed, position and race conditions.
Rather than relying on the shallow striped textures traditionally used in aero legwear, the PRO 2 features a significantly more defined three-dimensional rib profile.
This creates a more deliberate interaction between the fabric and airflow, turning one of the most exposed areas of the athlete into an opportunity for aerodynamic improvement.
Over 90 km or 180 km, small aerodynamic improvements add up.
The calf-only construction gives you aerodynamic coverage while allowing you to use your preferred running socks and footwear, making the PRO 2 ideal for athletes looking for marginal gains without compromising the rest of their race setup.
Pronounced 3D aerodynamic rib structure
Upgraded from traditional striped aero fabric
Designed to manage airflow around the lower leg
Close-fitting, compressive construction
Lightweight and highly stretchable
Calf-only design for easy integration into your race setup
Ideal for 70.3, IRONMAN and non-drafting triathlon
Clean branding
Free shipping
Measure around the widest part of your calf.
S – Calf circumference 28 cm to 36 cm
M – Calf circumference 35 cm to 42 cm
L – Calf circumference 42 cm to 50 cm
Marginal gains over 180 km aren't always marginal.
The PRO 2 Aero Calf Guards are designed specifically for triathlon and long-course racing, upgrading traditional striped aero fabric with a more pronounced 3D aerodynamic rib structure.
Your lower legs remain directly exposed to airflow throughout the bike leg. The PRO 2 transforms this area into a more aerodynamically optimised surface, using pronounced longitudinal ribs designed to manipulate airflow around the calf and help manage flow separation.
Aero calf guards are one of the simplest marginal gains available to a triathlete.
Published wind-tunnel testing of aero calf sleeves has demonstrated potential savings of over 2 minutes across a 180 km IRONMAN bike leg.
Individual results will vary depending on rider, calf shape, speed, position and race conditions.
Rather than relying on the shallow striped textures traditionally used in aero legwear, the PRO 2 features a significantly more defined three-dimensional rib profile.
This creates a more deliberate interaction between the fabric and airflow, turning one of the most exposed areas of the athlete into an opportunity for aerodynamic improvement.
Over 90 km or 180 km, small aerodynamic improvements add up.
The calf-only construction gives you aerodynamic coverage while allowing you to use your preferred running socks and footwear, making the PRO 2 ideal for athletes looking for marginal gains without compromising the rest of their race setup.
Pronounced 3D aerodynamic rib structure
Upgraded from traditional striped aero fabric
Designed to manage airflow around the lower leg
Close-fitting, compressive construction
Lightweight and highly stretchable
Calf-only design for easy integration into your race setup
Ideal for 70.3, IRONMAN and non-drafting triathlon
Clean branding
Free shipping
Measure around the widest part of your calf.
S – Calf circumference 28 cm to 36 cm
M – Calf circumference 35 cm to 42 cm
L – Calf circumference 42 cm to 50 cm
Marginal gains over 180 km aren't always marginal.
