ROCKBROS Long - Sleeve Compression Shirt: Functional Shirt for Breathable Sports and Running - Men's Sport Shirt, Sizes XS - XXL Product Details Brand: ROCKBROS Product Name: Men's Functional Shirt Material: 90% Polyester + 10% Elastane Fit: Slim Weight: Approx. 98 g (M/L) Color: White Season: All - year - round Applicable Objects: Men Size: XS/S, M/L, XL/XXL Features High - quality Fabric The ROCKBROS long - sleeve cycling jersey is made of 90% polyester and 10% elastane, a perfect combination of durability and flexibility. It only weighs 61 grams. Light materials reduce the burden during cycling. Moisture - wicking and Breathable Thanks to the unique mesh design, the fabric presents a 3D structure. A hollow layer is formed between the skin and the outer jersey, making the garment breathable and lightweight. It physically wicks away sweat, accelerates micro - air circulation, quickly removes sweat, and gives you a fresher feeling, keeping you dry while cycling. Ergonomic Design The close - fitting design adapts well to your body, and the elasticity is not restrictive. It minimizes air resistance, allowing you maximum freedom of movement while cycling. The stretch design ensures a more comfortable fit. Visibility at Night Reflective elements printed on the front and back improve your visibility in the dark and provide additional safety when cycling at night. Thoughtful Details The cuffs are simple in design, stretchy, and comfortable. The collar has a clip - ring and edge reinforcement. The hem is simple and tailored, without being constricting. The whole is sewn with four needles and six threads to make the clothing flat and stable. The reflective hem label takes on colorful hues, highlighting the style of long - sleeve cycling wear.