Jack and Jones Pretoria Polo Shirt. Jack and Jones Core Pretoria Polo ShirtLook stylish with the Pretoria Polo Shirt from Jack and Jones. Featuring a halp zip and fold over collar, the look is completed with Jack and Jones branding.> Men's Polo Shirt> Half Zip> Short Sleeves> Fold Over Collar> Elasticated Trims> Embroidered Logo> Jack and Jones Branding> 100% Cotton> Machine Washable> Keep Away From Fire