*MATERIALS* Exterior: 100% EVA Lining: 100% EVA Sole: 100% EVA *MEASUREMENTS* 33/34 - 22.5CM 35/36 - 23.5CM 37/38 - 24.5CM 39/40 - 25.5CM 41 /42 - 26.5CM 43/44 - 28.5CM WEIGHT: around 300g per pair (it is extremely LIGHT) NON-SLIP, you will have comfort and safety even when wet. ANATOMIC, with use you will notice it taking the shape of your foot.