Next level everything. This running bra has a flexible, lightweight internal structure that controls all the ways your boobs move. It slows down movement that's annoying at best and painful at worst, providing your boobs with a soft landing. ultralu™ Ultralu™ fabric is soft, smooth and powerfully supportive soft smooth powerfully supportive features Designed for: Run High support: Intended for high-impact activities Internal support system: Internal support system molds to your body. Engineered from injectable foam, it gives you flexible, breathable support so you stay cool and comfortable Soft inside: Brushed fabric interior is soft against your skin Lycra®: Added Lycra® fibre for shape retention Comfortable straps : Straps are padded for comfort Soft underband: Brushed elastic underband is soft, not scratchy, and won't dig in Hook-and-eye closure: Hook-and-eye closure for a customized underband fit