Classic Cycling Aero Base Layer – Unisex

Lightweight, Breathable & Built for Speed

Our Aero Base Layer is designed to keep you cool, dry, and aerodynamic during summer rides. Worn under your jersey, it combines an open mesh body for maximum ventilation with a performance-engineered sleeve that actively reduces wind drag — giving you a speed advantage without adding bulk.

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Aero Sleeve Technology

The sleeves are constructed from a ribbed aero material that breaks up airflow as it passes over your arm. This surface disruption reduces aerodynamic drag, helping you cut through the wind more efficiently — the same principle used in aero cycling skinsuits and time trial gear. Because the base layer is worn under your jersey, the ribbed texture works in concert with your outer layer to create a faster overall profile.

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Mesh Body – Cool & Dry

The body is knit from a lightweight DryPro open mesh fabric that creates a 3D layer of air between your skin and jersey. This promotes airflow, regulates core temperature, and delivers superior moisture wicking — pulling sweat away from the skin and transferring it outward so you stay fresher, drier, and more comfortable mile after mile.

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Specs

• Ribbed aero sleeves for reduced wind drag
• DryPro open mesh body for ventilation and wicking
• Performance fit – sits close to the body, worn under a jersey
• Minimal seams to prevent friction during high-intensity efforts
• Slight stretch for full freedom of movement
• Available in Small – XXL

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Fit Guide

This base layer is cut for a Pro Fit — close to the body for performance, with enough comfort for long rides. It will fit snug. See our Perfect Fit Guide for full sizing details.

Size	Small	Medium	Large	X-Large	2X-Large	3X-Large
Chest (in)	36–37	38–39	39–41	41–43	43–45	45–47
Chest (cm)	91.5–94	96.5–99	99–104	104–109.5	109.5–114.5	114.5–119.5

Measure across the fullest part of your chest, just under the armpits. This base layer fits snug — size up if between sizes.