New with tags. Never used. XS women’s From the Aion website: “For women who train hard and want more from every session, without adding time to the week. In a clinical study, wearing a weighted vest during HIIT increased calorie burn by 69%. Built to a woman's frame at 5 lbs, it sits flush against the body and stays put through lifts, intervals, and bodyweight work. No riding up, no chest pressure, no chafe. Build lean strength and endurance from the workout you already do. Add yours and feel it on your next session.”