Having good posture will help you to develop strength, flexibility and balance in your body. It will help decrease muscle pain in the neck, shoulders and back. The Improved Posture Compression Short Sleeve Shirt will assist with scapula retraction reminding the wearer to keep his/her posture straight. Designed with our unique fabric to reduce muscle vibration. This allows for more muscular efficiency = power with less pain. SWEAT IT OUT® with COOL COMPRESSION® technology fabric offers stretch and recovery of 200% in all directions (360°). This is a very effective tool for aiding both prevention of injury and helping in injury rehabilitation, as it was designed to give the shoulder its greatest total range of motion without restriction. Care Instructions: NO BLEACH! Machine wash cold, tumble dry warm. DO NOT Iron. NOT TO BE WORN WHILE SLEEPING.