Axial Long Sleeve Compression Shirt The Axial Compression Long Sleeve Shirt takes base layers to a new level with advancements in heat control, perspiration management and active compression to keep you cool, comfortable and focused when riding in the heat. Designed with keeping your cool in mind, the high-performance blend of polyamide, polyester, and elastane creates a material that's more breathable and dissipates heat faster than traditional blends and comes with the benefits of bacteriostatic and anti-odor properties. The active compression panels at the shoulder, inner arm and torso help reduce muscle fatigue, all in a seamless-construction package assuring of a comfortable fit. Construction: Eco friendly, high performance fabric Temperature Regulation: Moisture wicking locator under the chest and back pulls sweat away Moisture transferring panels in armor locations provide added breathability to high moisture areas Comfort: Bacteriostatic, hypoallergenic and anti-odor properties Breathable, seamless tubular construction reduces seams for maximum comfort Fit: Second skin fit Active compression panels at shoulder, inner arm and torso Low profile comfort fit neck and arms Note: This is a compression shirt and is meant to have a tight second skin fit. If you're in between sizes and concerned with the fit being too small, we recommend sizing up.