Chaco Chillos Sport Mens Size 11 Adjustable Strap Sandal Moss Green Waterproof Made with marshmallow-soft foam and just-right arch support, these Chaco Chillos Sport sandals will keep your feet happy poolside, fireside or after a tough hike or yoga class. Z/Strap adjustment system features cinch buckles and adjustable polyester jacquard heel straps to secure your fit Excellent condition.