Mesh,breathable and lightweight knitted upper.Without the feeling of binding,without stuffy and helping your foot feel secure,comfortable as you all day. Comfortable & Soft Insole: It is a kind of high elastic breathable memory foam provide stable moving and slip resistant for your foot. Soft insole adds stability and responsiveness,it helps to smooth the heel-to-toe transition. Lightweight and non-slip outsole: A softer foam cushions your foot,the outsole with impact cushioning, anti-twist, abrasion-resistant and anti-slip and irregular pattern adds traction and durability, and the high-quality materials make the shoes bend when moving. Anti-Slip Sole:The whole outsole is made of non slip EVA with high elasticity and softness which will provide you with much support, and the anti-skid grooves on the bottom can increase traction and provides impact cushioning, anti-twist, abrasion-resistant, and anti-slip perform with the ground.