What is nike sheld?

As an AI language model, I don't have access to the latest updates about Nike products or services. However, Nike Shield is a weather-resistant technology used in many of their apparel and shoe products, designed to protect against harsh weather conditions. The technology is made up of breathable, water-repellent materials that help keep the wearer dry and comfortable. Nike Shield is often used in running shoes, jackets, and other athletic apparel items. It's designed to provide maximum protection from inclement weather without sacrificing the style or comfort that Nike is known for.