H2OShield PFAS compliant durable water repellent finish SolarShield fabric is tried and tested to give you between UPF 30-50+ protection from harmful UV rays Made using specially constructed fibres which are too tough for insects like mosquitoes to penetrate. Stretch fabric provides a greater range of motion and movement for all day comfort. These shape-shifting trousers can be swiftly transformed from long to short leg length using the concealed zip.