UPF50+ t-shirts. The fabric has been tested by ARPANSA and blocks 98% of harmful UV rays getting to sensitive and normally unprotected skin. Fabric is made from super soft, breathable and comfortable premium, organic cotton. Sunbubs t-shirt unique design ensures kids skin remains covered when running, jumping, bending and exploring the great outdoors. Sunbubs logo is embroidered on the shirt at the back of the neck.