Nadine Ghosn, in collaboration with Wristcheck, is selling a three-piece set that includes a ruler to mark the hours.

PS editor Sarah Wasilak tests out Rihanna's Savage X Fenty Loveline lingerie just in time for Valentine's Day — read her review of the bra and panty set.

However, the Performance Loop has its downsides. Despite the marketing claims, the fabric isn’t all that breathable. Video team member Jordan tested quite heavily during weekly 10-15-mile runs and ...