The Tri-Mountain Puffer Vest in Blue is a unisex small jacket made from nylon with a polyester lining and insulation. It features a solid pattern, mid-length design, full zip closure, and is designed as a bodywarmer for added warmth. The vest is from the Tri-Mountain brand and is suitable for various themes including college, city, and classic styles, making it a versatile and stylish addition to any wardrobe.