Tri-Berry is as smooth as a berry flavor can be… a trifecta of berries for a sweet, rich and ripe flavor. Slight floral notes add depth and another dimension to this otherwise smooth flavor. This tried and true flavor is a favorite among GU fans. To avoid bonking while exercising, you need a portable source of easily digestible carbohydrates to fuel your muscles. GU Original Energy Gels pack quick, effective, and sustained energy to meet the demands of all types of activity. All Energy Gels are Vegan, Gluten Free, and Kosher.