Original Penguin Penguin Short Sleeve Raised Rib Polo Mens. Penguin Short Sleeve Raised Rib Polo MensKeep things casual with the Short Sleeve Raised Rib Polo from Penguin. Crafted with a 2 button placket and an embroidered Penguin logo to the chest, this piece is perfect for weekend wear.• Polo shirt• Short sleeves• 2 button placket• Embroidered Penguin logo• Raised rib detail• Fold down collar• 100% cotton• Machine washable at 30 degrees