I've bought probably 10 of these in the last 3 or 4 years. I throw them away when they're worn out or smelly. I use one of these every morning for my workout - whether it's a gym workout, running or a sport, they do a great job as a lightweight compression layer. They're not super-compressive, but they do the trick. If you are looking for higher compression for health/aesthetic reasons I would go elsewhere. I reduced my size to medium and am usually tall in t-shirts.