These leg warmers are generally thick, roughly the thickness of a thin sweater. The fine structure and extra-long fleece support its excellent performance in winter. They can of course be worn directly on the calf, or you can also wear them with leggings or even over jeans with long boots, they can completely fill the gap between the pants and the boots and completely block the intrusion of cold air.
They're certainly not just accessories, but downright pragmatists. You can wear them for chores around the house, and switching indoors and out is not a problem. Warm-ups and intervals for yoga and dance workouts, they both allow you to warm up quickly or stay warm, they're super easy to put on and take off, and they're lightweight and comfortable.
These leg warmers do a lot of extra great work. Many people with poor circulation in their feet wear them to bed, and they provide extra warmth, which is especially important for pregnant women and the elderly, as these leg warmers don't add pressure to the belly. They don't just work on the calves, you can stretch them above the knee and they'll hold up well and won't slide off.
These are Kayhoma leg warmers, they are a completely different product.