Jeggings have a reputation problem and it is mostly undeserved. The bad ones go baggy at the knee by lunchtime, lose their shape after three washes, and develop that sad sagging effect around the thighs that makes you wish you had just worn actual jeans. But the good ones are genuinely brilliant. The stretch means they work across a wider range of body shapes than rigid denim ever could, they tuck into boots without bunching, and they go from a casual morning to an evening out with almost no effort. We have worn enough disappointing pairs to know exactly what separates the ones worth buying from the ones that are not. The fabric weight matters. The percentage of elastane matters. The cut at the waist matters enormously because a poorly designed waistband on a stretchy jean is uncomfortable in a way that is hard to forgive. Every pair in this edit has been chosen because it holds its shape, keeps its colour, and still looks like something you actually want to put on after repeated wearing. Longevity is the whole point here.