You own three pairs of leggings that all feel wrong. One slides down during a walk. Another pills between the thighs after two washes. The third costs more than your weekly grocery bill but still feels cheap. You need one pair that works for coffee runs, stretching, and errands without falling apart. The Lululemon Align and Athleta Salutation are the two most common answers. But they are not the same. Here is exactly how they differ and which one you should buy. Fabric Feel and Weight: Nulu vs. Powervita The Align uses Lululemon’s Nulu fabric. It is a blend of…