ZETT Baseball Short Sleeve Half-Zip Jumper This item uses Technis, a new material that repels water and is breathable. It is a lightweight material with excellent water repellency and breathability. It features a stylish stand-up collar and a half-zip design. The ZETT 3D embroidery is on the back of the collar. This is a lightweight, unlined piste type that is easy to move in and a convenient item that can be worn all season. Material: Technis (100% polyester) Water repellent, windproof, lightweight, breathable Unlined Back collar logo (gray) Only worn about 3 times.