men's Dry Fit lightweight upf 50+ Swim tank top would be the best choice in your training wear.UPF 50+ sun protection fabric can protect you from harmful UVA/UVB rays. Whether indoors or outdoors, it will give you an excellent wearing experience. Quick-drying: Extremely soft and lightweight fabric features moisture-wicking and breathable, keep you stay cool and dry from warmups well into the afterburn Sun Protection: UPF 50+ rating easily blocks both harmful UVA and UVB rays, protecting you away from sunburn Exquisite Details: Well-cutted armholes allow free movement, give you a comfortable training experience Active Tank Top: Sleeveless design, Tagless collar. A Softer feeling of the fabrics means minimum skin irritation Perfect for athletic, running, gym, bodybuilding, workout, fitness, training, basketball, casual wear and other outdoor activities