Elastane neoprene lining adds padded comfort Built-in, textured EVA footbed M Select GRIP Merrell In-Board Compression moulded EVA footframe Merrell air cushion in the heel Q FORM® 2 dual-density midsole 3.0 mm lug depth Take a step out into the great outdoors with Merrell's Siren Strap Q2 Waterproof Walking Shoes. This shoe is made with a waterproof nubuck and webbing upper, with rip-tape fastening for ease and for a custom fit. The compression moulded EVA footframe delivers cushioning while the Q FORM® 2 dual-density midsole with heel-centring technology is designed with gender-specific engineering to optimise alignment and comfort. The Merrell air cushion in the heel absorbs shock and adds stability. M Select GRIP provides traction and a 3.0mm lug depth on each outsole ensures durable grip when and where you need it.