Please confirm the size you want before buying! Manual measurement is for reference only. WARM TIPS If the size between the two sizes, please choose size up. M: suitable for 155-165cm L: suitable for 165-170cm XL: suitable for 170-175cm XXL: suitable for 175-178cm XXXL: suitable for 175-180cm XXXXL: suitable for 178-185cm PREMIUM MATERIAL,KEEP BODY WARM The men wetsuit jacket is made of the updated fabric: 90% Neoprene and 10% Nylon. This newest material makes the wetsuit more elastic, more comfortable, softer and more durable.The 3mm thick neoprene wetsuit top could keep your body warm and dry while you do some water sport. It is also comfortable for you to do physical activity in cold weather. PROTECTION Elastic long sleeves waterproof jacket help prevent sunburn and injuries, the tighthen cuff design to enhance the waterproof effective. HUMANAZATION DESIGN- Front zip design is easy to get on and take off. Fits close to the you body, give you greater freedom of movement. MULTI-FUNCTIONThis neoprene tank top is not only perfect for swimming, surfing and snorkeling, but also suitable for fitness. It will creates sauna effect and make you get more sweat while you do physical exercise, to speed up achievement of your fitness goal. WASH CARE Handwash in cold water with mild detergent and hand try, no iron, no bleach.