Fluctuate freely with YourFit™. your new go-to for one size undies that just joined our best-selling 3 for $48 mix and match program. The YourFit™ Side Seam Boyshort is our first-ever one size panty that fits a range of shapes and sizes between XS-XL (2-14). Designed in a buttery fabric with a smooth finish. YourFit™ is designed to adapt to different body types all while maintaining its stretch.