If you are a big Chest or wide shoulders, please get the next size up Please note: 1. This is not Amazon’s standard size,so please kindly refer to our suggested chest and the actual measurement, rather than follow the Amazon’s ‘Size Chart’. 2. Tight Fitting,like a second skin.If you prefer the ‘Slim-Fitting’,please go up 1 size. Neleus was born in 2008 ,with its unique design concept, excellent quality and comfortable clipping, has gain the crazy love from the clients. As the most energetic brand, Neleus is committed to provide the most innovative and price-friendly sport goods. Technological quality is the priority of the company’s products.