Smartcap Long Hair Shimano Di2 This means the ball is

This means the ball is not pressurized like traditional balls

quick and secure closure

5 oz (326 g) strung with an oversize 110-sq-in head

a fit designed for on the bike

Smartcap Long Hair Shimano Di2 This means the ball isThe innovative and extremely comfortable arena Unisex Swim Cap Smartcap is a unique swim cap for fitness swimmers with long hair. The patented construction is easy to handle and it takes only three seconds to put it on. First of all you put the inner hairband on, which holds the hair tight. Then you place the long hair in the cap and put it on. Now the swim cap fits perfect and the long hair lies comfortably protected under the cap.