Sweatpant comfort denim Elastic waistband joggers with drawstrings 3-button thermal t-shirt Comfortable and cool. This 7 For All Mankind Boys 2-Piece Long Sleeve Thermal T-Shirt and Denim Joggers Set is a stretchy casual set that will have him feeling and looking good. The thermal shirt is soft and lightweight making it perfect for all-day wear. Denim joggers with an elastic waistband make it easy to move and play.