Speedo Silicone Aqua V Swim Cap Description With multi-million dollar research, extensive CFD analysis and intense flume testing, Speedo Aqualab offers the unrivaled Aqua V Cap. It is the ultimate cap for elite performance, offering an ergonomic fit and 5% drag reduction during competition.The top section of the cap is the thickest, ensuring that the cap is wrinkle free. The mid section is the thinnest, allowing the cap to stretch and remain comfortably snug, and the base section runs around the hairline providing an ergonomic and stable fit. Fit is critical, so we have offered two sizes, medium and large. The cap tends to run a bit small, so most adults will fit best in size large.Swim your best times ever in this technologically advanced cap, sure to be your favorite. At a GlanceZoned 3-D shape creates a hydrodynamic fitAnatomical fit around base of head and over earsSmooth, latex free silicone reduces dragProvides comfort and stability during competitionLogo size meets NCAA and high school regulations for competition Features: Zoned 3-D shape creates a hydrodynamic fit Available in two sizes for optimum fit Anatomical fit around base of head and over ears Smooth, latex free silicone reduces drag Logo size meets NCAA and high school regulations for competition Product Details: Size: Medium Color: Blue Material: Silicone Brand: Speedo Item Package Dimensions L x W x H: ‎9.2 x 5 x 0.3 inches Package Weight: ‎7.2 Ounces Item Dimensions LxWxH: ‎8.5 x 4.2 x 1 inches Item Weight: ‎0.3 Pounds Brand Name: ‎Speedo Color: ‎Blue Material: ‎Silicone Suggested Users: ‎unisex Manufacturer: ‎Speedo Part Number: ‎7510059-041-M Style: ‎7510059 Size: ‎Medium Sport Type: ‎Swimming Date First Available: July 14, 2010