At Mauri Pro Sailing you can find Ronstan Technical Rashguards. These products are designed with a unique bamboo fiber to help reduce wind-chill and also have deodorizing properties and a silky feel that provides maximum comfort. The Ronstan New UPF Rash Top-Long Sleeve provides UPF 50+ sun protection and the stretch material allows the perfect fit you are looking for. It is available in different sizes. For further technical information you might need to select Ronstan Sailing Gear, please contact us. Our crew is happy to help.