The Merrell Siren 2 Flip performance flip-flops have a womens-specific design that is shaped to fit the natural contours of a womens foot, allowing for a more sure fit and better stability. Slip-on sandal made of a suede and mesh upper. Nylon web post. Neoprene lining for padded comfort and better fit. Cushioned footbed for added underfoot support. Merrell Air Cushion in the heel provides added stability and shock absorption. Q Form 2 midsole features dual-density construction to provide gender-specific alignment and comfort. M Select GRIP provides durable stability and traction. 3.0mm lug depth. Imported. Measurements: Weight: 7 oz Product measurements were taken using size 8, width M. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.