This rash guard is both perfect for no gi as well as wearing underneath a gi. Please note that all rash guards fit very true to size. • 82% polyester, 18% spandex • 6.78 oz/yd² (230 g/m²) (weight may vary by 5%) • Very soft four-way stretch fabric that stretches and recovers on the cross and lengthwise grains • Fitted design • UPF 38-40 • Comfortable longer body and sleeves • Flatseam and coverstitch • Blank product components sourced from China