This is my second pair. I love the 3/4 - no bunching under my ski boots or around my knees. I use them either as a second under layer on extra cold days, or my only base layer for warmer days or touring. They're breathable, comfortable, fit is great.
I'm 5'4", 135 lbs, and the Medium fits great.
Love the weight and warmth of these leggings + the leopard pattern makes them cute enough to wear on their own!. I got the 3/4 length Winter Leopard in size Small, I'm 5'4 and 125 lbs. Fits true to size and length is perfect with snowboard/ski boots, no bunching or extra material inside the boots.