STRETCH POLY-SPANDEX FABRIC with Fieldsheer comfort stretch that moves with you in every layer FLAT-LOCK SEAMS with Fieldsheer chafe-free stitching for smooth comfort under every layer 1/4 ZIP PULLOVER with Fieldsheer easy venting and quick layering on the move LIGHTWEIGHT BASELAYER FIT with Fieldsheer stretch comfort that layers easily under jackets and shells EASY-CARE PERFORMANCE with Fieldsheer stretch poly fabric that stays ready for your next layer-up Stay comfortable when temperatures drop with the Fieldsheer Ion Baselayer Shirt Women’s Heated Baselayer Shirt, a sleek 1/4 zip pullover designed to layer smoothly under riding gear, workwear, or everyday outerwear while delivering the streamlined fit and mobility you need for active days. Built from an 88/12 stretch polyester spandex fabric, it moves with you without feeling restrictive, making it ideal for long hours in the saddle, on the job, or outdoors, while the chafe-free flat-lock seams help maintain a clean, low-profile feel against the skin. The quarter-zip design lets you fine-tune ventilation and coverage in changing conditions, and the performance-driven construction reflects Fieldsheer’s long-standing focus on merging advanced materials with smart, next-generation apparel design—so you can stay focused on the ride, the task, or the trail instead of the weather.