The Rip Curl Rashguard Men's Navy Blue Classic Short Sleeve Swim Shirt in size M is a solid-colored, mock neck shirt made from stretchy jersey fabric. With the signature Rip Curl logo accent and a beach/surf theme, this athletic fit shirt is perfect for summer, fall, and spring seasons. Easy to care for with machine washable instructions, this versatile shirt is great for personal comfort and style while out in the water or enjoying a day at the beach.