Castelli Core Seamless Base Layer Tank - White

Castelli Core Seamless Base Layer Tank – Seamless Comfort and High Breathability

The Castelli Core Seamless is a technical cycling base layer tank designed to provide comfort, breathability, and optimal moisture management during rides in cool temperatures. Its seamless construction ensures a snug and comfortable fit, eliminating pressure points and chafing while pedaling.

The fabric uses a blend of polyester (84%) and polypropylene (16%) yarns, engineered to offer softness, stretch, and thermal insulation, while maintaining a high capacity for moisture transport to the outside. This keeps you dry and warm even during intense efforts, preventing the cold feeling when slowing down or stopping.

The garment’s structure is lighter on the sides and back, promoting ventilation in areas where sweat tends to accumulate. The wide neckline is designed to fit perfectly even under cycling jerseys with a low collar, making this tank extremely versatile.

Ideal as a base layer for road or gravel rides in mid-seasons or cool days, when it’s important to keep the body dry and thermoregulated.

Key Features

• Seamless construction for maximum comfort

• Yarns 84% polyester / 16% polypropylene

• High breathability and moisture management

• High stretch for a close fit

• Structure lighter on sides and back for improved ventilation

• Wide neckline compatible with low-collar jerseys

Technical Specifications

• Weight: 107 g

• Recommended temperature: 8°C – 20°C (46°F – 68°F)

The Castelli Core Seamless is the ideal choice for cyclists looking for a lightweight, breathable, and comfortable technical base layer, perfect as a first layer for rides in cool or variable weather.