Designed with our patented ComfortWeave® fabric, the SO5sleeves feature 3/4-length arm coverage, and an adjustable three-row hook & eye closure on the center of the back.For easist application, pull hook and eye closure in front of your chest and secure the closure before putting on sleeves. Put arms into sleeves and adjust garment to your comfort - then pull hook and eye closure to the center of back where the garment should naturally lay.