Which of these would you not wear on a hot summer day? Sweatshirt, t-shirt, shorts, tank top, hat, wool coat, leather trousers, crop top.
The average person would likely not wear a sweatshirt, wool coat, or leather trousers on a hot summer day. A sweatshirt is generally a second layer worn on top of another article of clothing for additional warmth, which one wouldn't need on a hot day. A coat is another garment meant to layer over other clothing, and wool is a particularly warm material. Leather is not a breathable fabric, so leather trousers would also be undesirable on a hot day.