Under Armour Launch Split Perforated Shorts Get ready for your new favourite running shorts, these lightweight lined shorts will keep you comfortable and dry. Feel fresh and fast in the Under Armour Launch Split Perforated Shorts. Constructed from ultra-light perforated fabric, they are bulk-free and allow fresh air to enter and circulate for maximum breathability. An internal mesh liner provides support and added coverage, whilst the soft knit waistband with internal drawcord allows you to find the perfect fit. A drop-in pocket provides a place to store any essentials. The split side hem allows for total freedom of movement.