KEEN Ke Arroyo Ii M Blk Multi/patterned 40 The Keen Arroyo II M BLK is a comfortable and durable sandal perfect for outdoor adventures. It features a secure fit with adjustable straps and a breathable mesh lining. The sandal also has a durable outsole that provides excellent traction on various surfaces. Keen. Upper: 80% leather, 20% polyester-nylon blend. Outsole: 100% rubber. Waterproof. EUR 165.00 1