SKINS Women's Size Chart The SKINS DNAmic Base Women's Long Sleeve Top is the base layer you need to keep your active goals in check when you'd rather be indoors. A semi-seamless construction minimizes bulk under your running or snow sport gear and DNAmic Gradient Compression gives your upper body muscles a boost to keep you on the go longer. Features: - SKINS most advanced compression technology increases muscle oxygenation, stabilizes the muscles and reduces blood lactate build up, to enhance performance and speed up recovery time. - Unique sizing system based on SKINS' unique Body Mass Index (BMI)/anthropometrical algorithm, so you get the full benefits of gradient compression - Moisture wicking fabric draws sweat away from the skin for quick evaporation - Minimal seams for extra comfort, ideal for layering