Each training aid works a particular part of your body

The classic crew neck and short sleeves make it easy to move in

and componentry

they offer a comfortable and versatile length for all-day wear

Sporty and versatile

Men's Extender Mid Jammer Shorts Size:12 Each training aid works aThe Zoggs Mens Extender Mid Jammer is a classic black jammer with a twist. Featuring a dynamic digital graphic print on the side leg, a 39cm leg length and triangle front lining this is the one jammer you need in your swim kit for all year round swimming. Made from Zoggs sustainable Ecolast+ fabric with recycled plastic bottles, these mid jammers are also 100% chlorine resistant and comes with Zoggs Lifetime Guarantee.