The HS Boy's Long Sleeve Activewear Twin Set is a coordinated outfit designed for active wear. It includes a long-sleeve shirt and shorts, both made from 100% polyester fabric. Polyester is known for its durability, moisture-wicking properties, and flexibility, making it an ideal choice for athletic activities.

The long-sleeve shirt provides coverage and warmth for cooler weather or outdoor activities. It likely features a crew neckline and may have ribbed cuffs for a comfortable fit. The polyester material helps to wick away sweat, keeping the wearer dry and comfortable during physical exertion.

The shorts are also made from polyester, offering lightweight and breathable comfort. They typically have an elastic waistband for a secure fit and may include features such as pockets for convenience.