Upgrade to the Cushion Strand to experience both our comfiest footbed ever plus eco-mindful quality. The Strand's Cushion PU means awesome softness but with rebound and support, so it maintains its shape. This cushy sole features superior arch support and heel cupping (so nice), which is covered with real, natural cork - breathable, sustainable, and even anti-microbial. Wide, soft webbing straps made from recycled plastic bottles are attached to the outside of the sole. All of this means the ultimate in "ahhhh" for your foot and your conscience.