Castelli Insider W Sleeveless

DAS Indoor tank top for Zwift, Peloton, and similar activities, or for use in the gym – while staying pleasantly cool.

We designed this sleeveless top to provide more cooling than wearing no top at all. This works by distributing sweat over a larger area, promoting evaporative cooling. Of course, it won't make your indoor sessions sweat-free, but it will certainly make them more comfortable. It features a deliberately simple design with a close fit and a back pocket. We equip it with HEIQ Fresh Tech treatment, which naturally prevents odors from developing in the fabric over time.

Lightweight, quick-drying 3D mesh material (93% polyester, 7% elastane) for optimal sweat management. HeiQ Fresh Tech silver-free treatment. Material with good air circulation without being too transparent. Small zip pocket at the back.