High visibility fleeces are a type of workwear designed to provide warmth and visibility to the wearer. They are typically made from a combination of polyester and high visibility materials such as fluorescent fabrics or reflective tape. High visibility fleeces are often used in outdoor work environments where workers need to be visible to others, such as construction sites, road works, and railways. They are available in different colors, but most commonly in bright yellow or orange. Some high visibility fleeces also feature additional safety features such as waterproofing, windproofing, and breathability, to keep workers comfortable and dry in various weather conditions.

These fleeces can be worn alone or as a layer underneath other high visibility clothing such as jackets or coveralls, providing an extra layer of warmth without compromising visibility. They are available in different sizes and styles for both men and women.