Here are the descriptions for the men's official cotton long sleeve shirts, available in a set of five pieces in white, maroon, and blue:

1. Classic White Shirt: This shirt features a crisp white color, perfect for any formal or business setting. Made from high-quality cotton, it ensures breathability and comfort throughout the day. The design includes a traditional collar and buttoned cuffs, offering a clean and professional appearance suitable for various occasions.

2. Elegant Maroon Shirt: This shirt comes in a rich maroon shade, adding a touch of sophistication to your professional wardrobe. The pure cotton fabric provides a soft and comfortable feel, while the shirt’s design includes a classic collar and adjustable cuffs. It's ideal for making a stylish statement in the office or at formal events.

3. Light Blue Shirt: Featuring a light blue color, this shirt offers a polished and versatile look. The cotton material ensures excellent softness and durability, making it perfect for long office hours. It includes a standard collar and buttoned cuffs, allowing for a tailored fit that complements any business attire.

4. Navy Blue Shirt: This shirt showcases a deep navy blue shade, providing a modern and refined appearance. The high-quality cotton fabric ensures comfort and ease of movement. With a traditional collar and neat cuffs, this shirt is suitable for both formal meetings and casual business settings.

5. Sky Blue Shirt: This shirt is designed in a soft sky blue color, offering a fresh and clean look suitable for any professional environment. The breathable cotton material ensures all-day comfort, and the shirt’s design includes a standard collar and adjustable cuffs. It's a versatile piece that pairs well with various formal and semi-formal outfits.