This sock uses 5% higher Invista Lycra fibers in its precision weave to increase compression specifically for recovery. This sock is slightly less breathable, a better option in a dedicated recovery sock since they are commonly worn while sleeping where heat retention may be a benefit. The Recovery Compression Sock is noticeably more compressive. This higher compression is also a great option for traveling to and from races, especially air travel. It provides a very snug fit when sized correctly from the 2XU size chart that felt good on sore lower legs.