The purpose of a compression garment is to support muscles during workout, reduce muscle fatigue and lactic acid build up, and to aid in muscle recovery following strenuous exercise.
You can ensure you gain maximum benefit from wearing your compression garment by selecting the correct size so that it provides sufficient pressure at the time you purchase it, rather than allowing for growing room.
The pant contains 25% Elastane which provides the stretch and compression. You can ensure these properties last as long as they fit, by washing the pants, in lukewarm soapy water, soon after each time you wear them, as this will remove any residue of perspiration which could degrade the Elastane fibres causing them to become looser. Rinse thoroughly.