Gobik Base Layer Boundary - White

High-performance undershirt designed to maximise aerodynamic efficiency when worn under time trial suits or competition jerseys made from smooth outer materials.
Conceived as a functional component within a two-layer textile architecture, its purpose goes beyond the traditional thermal management of a baselayer. It integrates sleeves made from three-dimensional structured fabric, strategically developed to influence airflow behaviour over the body, reduce aerodynamic drag, and improve flow stability at high speeds.
Its construction is optimised for positions with maximum aerodynamic demands on the bike, particularly in time trial configurations or aggressive riding positions. In these scenarios, where every saved watt is crucial, it acts as an active element in reducing the overall resistance of the system.
An ultralight and technical first layer, designed to convert small aerodynamic improvements into measurable performance gains.
Aerodynamic high-performance undershirt.
Designed for two-layer textile systems.
Sleeves made from three-dimensional structured fabric.
Optimised for use under smooth outerwear.
Designed for aggressive positions on the bike.
Perfect Fit.
Ultralight construction. High breathability.

Technical features:

• Breathability
• Weight: 55 g (M)
• Temperature of use: 12-
• 30 ºC
• Fitting: PERFECT FIT

Optimal usage conditions:

• Designed for competitions, time trials, and high-intensity training sessions where aerodynamic efficiency is a priority. Its use is particularly suitable under skinsuits or competition jerseys made from smooth outer fabrics, creating a double-layer system that enhances interaction with airflow.
• It delivers its maximum performance in aggressive positions on the bike, at high speeds, and in scenarios where any reduction in aerodynamic drag can lead to a real performance increase.

Technology:

• Its design is optimised to function under time trial suits or competition jerseys made from smooth outer fabrics. In this combination, the outer layer provides a continuous surface, while the structured sleeves of the undershirt introduce an internal three-dimensional texture that can influence airflow behaviour. The sleeves made from structured 3D fabric are strategically positioned in one of the areas most exposed to wind in an aerodynamic position. This construction favours the generation of controlled turbulence, supports boundary layer management, and helps reduce the aerodynamic drag of the system. The Perfect Fit ensures a precise fit to the body and avoids wrinkles, slipping, or fabric bunching that could impair both comfort and aerodynamic performance. Its elasticity allows it to accompany the natural movements of the cyclist without restriction, even in aggressive or prolonged positions on the time trial aero bars. Weighing only 55 g in size S, it offers an extremely lightweight construction designed to integrate under competition clothing without adding unnecessary volume. Its breathability helps maintain a pleasant wearing experience even under intense loads by wicking away moisture generated during activity. The result is a highly specialised undershirt designed for cyclists who want to optimise every detail of their competition system and convert small aerodynamic improvements into measurable performance gains.

Product care:

• Do not dry clean. Wash with cold water, use a neutral detergent, and do not use fabric softener. Wash inside out; otherwise, pilling may occur with certain fabrics. Always use a laundry bag if possible and load the washing machine with the minimum amount of laundry. Use the delicate garment program or spin at the lowest possible speed. Dry the garment inside out and in the shade. Do not soak the garment and do not twist to wring it out. Do not iron.