Color: Red Sleeve Length: Short Sleeve Pattern/Design: Fern Collar: Open Collar Material: Cotton Season: Summer Patagonia S Pataloha Fern Pattern Aloha Shirt Red-based fern design. This is a Pataloha shirt made of organic cotton fabric. A Patagonia masterpiece, often called wearable art. This special aloha shirt with a fern pattern exudes a unique atmosphere and presence, with a Hawaiian local feel and a moderate vintage vibe.